If, then, we would form an idea of the total number of men able to carry arms in Gaul, we must augment the contingents really furnished, sometimes by two-fifths, sometimes in a higher proportion, according to the distances which separated them from the seat of war. By this calculation, the levies of 697 represent 513,600 men capable of carrying arms, and those of 702, at least 573,600; we add together these two numbers, because, as stated above, each army comprises different populations, which gives 1,087,200 men, to whom we must add 92,000 Helvetii; moreover, it is indispensable to take into account the contributive capability of the populations which are not mentioned in the “Commentaries” among the belligerents at the two epochs indicated above, such as the Pictones, the Carnutes, the Andes, the Remi, the Treviri, the Lingones, the Leuci, the Unelli, the Redones, the Ambivareti, and the peoples of Armorica and Aquitaine. By an approximate estimate of their population according to the extent of their territory, we shall obtain the number of 625,000 men. Adding together these four numbers, to obtain the total number of men capable of bearing arms, we shall get 513,600 + 573,600 + 92,000 + 625,000 = 1,804,200 men. Quadrupling this number to get, according to the proportion applied to the Helvetii, the total of the population, we shall have 7,216,800 inhabitants for Gaul, the Roman province not included. In fact, Diodorus Siculus, who wrote in the first century of our era, says (lib. V., c. 25) that the population of the different nations of Gaul varies from 200,000 to 50,000 men, which would make a mean of 125,000 men. If we take the word ??d?e? in the sense of inhabitants, and if we admit with Tacitus that there were in Gaul sixty-four different nations, we should have the number of 8,000,000 inhabitants, very near the preceding. The Albici (the south of the department of the Lower Alps, and the north of the Var). (De Bello Civil., I. 34; II. 2.) The Allobroges, probably of Celtic origin, inhabited the north-west of Savoy, and the greater part of the department of the IsÈre. The Helvii, inhabitants of the ancient Vivarais (the southern part of the department of the ArdÈche), separated from the Arverni by the CÉvennes. (De Bello Gallico, VII. 8.) The Ruteni of the province (Ruteni Provinciales), a fraction of the Celtic nation of the Ruteni, incorporated into the Roman province, and whose territory extended over a part of the department of the Tarn. The Sallyes, or Salluvii (the Bouches-du-RhÔne, and western part of the Var). (De Bello Civil., I. 35, edit. Nipperdey.) The Vocontii (department of the DrÔme and Upper Alps, southern part of the IsÈre, and the northern part of the ArdÈche). The VolcÆ occupied all Lower Languedoc, from the Garonne to the Rhone. They had emigrated from the north of Gaul. They were subdivided into the VolcÆ Tectosages, who had Tolosa (Toulouse) for their principal town; and the VolcÆ Arecomici.
The Aduatuci, who occupied a part of the province of Namur. The Ambiani, a people of the department of the Somme. Their chief town was Samarobriva (Amiens). The Ambivareti, established on the left bank of the Meuse, to the south of the marsh of Peel. The Atrebates, the people of the ancient Artois, and a part of French Flanders. Their principal oppidum was Nemetocenna (Arras). The Bellovaci, occupying the greater part of the department of the Oise (the ancient Beauvaisis), and who extended, probably, to the sea. (Pliny, Hist. Nat., IV. 17.) The Caletes, whose territory answered to the ancient Pays de Caux (the western and central part of the department of the Seine-InfÉrieure). The Leuci, who occupied the southern part of the department of the Meuse, the greater part of that of the Meurthe, and the department of the Vosges. The Mediomatrices. They extended from the upper course of the Meuse to the Rhine (department of the Moselle, and part of the departments of the Meuse, the Meurthe, the Upper Rhine, and the Lower Rhine). The Menapii, who occupied the territory comprised between the Rhine and the mouths of the Scheldt. The Morini, who inhabited the western part of the department of the Pas-de-Calais, and extended to near the mouths of the Scheldt. The Nervii, established between the Sambre and the Scheldt (French and Belgic Hainaut, provinces of Southern Brabant, of Antwerp, and part of Eastern Flanders). The writers posterior to CÆsar mention Bagacum (Bavay) as their principal town.
The Remi, whose territory embraced the greater part of the departments of the Marne and the Ardennes, a fraction of the departments of the Aisne and the Meuse, and of the province of Luxemburg. Their principal town was Durocortorum (Rheims). The Suessiones, the people of the ancient Soissonais, whose territory comprised the greater part of the department of the Aisne. Principal oppidum, Noviodunum (Soissons). The Treviri, separated from Germany by the Rhine, and occupying the whole lower basin of the Moselle (Rhenish Luxemburg, Prussia, and Bavaria). The Treviri had for clients— The Condrusi, established to the south of the Meuse, in the ancient Condroz, and who reached almost to Aix-la-Chapelle. The Eburones, occupying part of the provinces of LiÉge and Limburg, and reaching to the Rhine through the ancient duchy of Juliers.
The Triboces, established on both banks of the Rhine, occupied the central part of the Grand Duchy of Baden and the north of the department of the Lower Rhine, perhaps already invaded, on the left bank. Their presence on the left bank of the Rhine appears from CÆsar’s account. (De Bello Gallico, IV. 10.) The Veliocasses, whose territory embraced the ancient Vexin, and who occupied part of the departments of the Seine-InfÉrieure and the Eure. The Veromandui, occupying the ancient Vermandois, the northern part of the Aisne, and the eastern part of the Somme. The Arverni extended over a vast region, comprising the present departments of the Puy-de-DÔme and Cantal, and part of those of the Allier and the Upper Loire. Gergovia was their principal town. The Arverni had for clients— The Cadurei Eleutheri, whose territory answered to the ancient Quercy (department of the Lot). [This epithet of Eleutheri, which is found in CÆsar (De Bello Gallico, VIII. 75) leads us to believe that in southern Quercy there existed Cadurci placed under the dominion of Rome.] The Gabali, who occupied the ancient GÉvaudan (the department of the LozÈre). The Vellavi, whose territory answered to the ancient Velay (department of the Upper Loire). The Aulerci formed an extensive nation, which was subdivided into three great tribes, established over the country from the lower course of the Seine to the MayennÉ. 1. The Aulerci Cenomanni, a fraction of whom was, as early as the sixth century of Rome, established in Cisalpine Gaul, between the Oglio and the Adige, and who occupied in Gaul the greater part of the territory now forming the department of the Sarthe; 2. The Aulerci Diablintes, the northern and central parts of the department of the Mayenne. 3. The Aulerci Eburovices, the central and southern part of the department of the Eure. The Bituriges, a nation which had more than twenty towns. Avaricum (Bourges) was the principal. Their territory embraced the ancient Berry (departments of the Cher, the Indre, and part of the Allier). The Carnutes occupied the greatest part of the present departments of Eure-et-Loir, Loir-et-Cher, and Loiret. Genabum (Gien) was one of their most important towns. The Ædui occupied the modern departments of SaÔne-et-Loire and the NiÈvre, and a part of the CÔte-d’Or and the Allier. Their principal oppidum was Bibracte (Mont-Beuvray), the place of which was subsequently taken by Augustodunum (Autun). Cabillonum (Chalon-sur-SaÔne), Matisco (MÂcon), and Noviodunum, afterwards called Nivernum (Nevers), were also reckoned among their most important places. The Ædui had for clients— The Ambarri, a small tribe situated between the SaÔne, the Rhone, and the Ain (department of the Ain). The Ambluaretes, a people occupying a district around Ambierle (arrondissement of Roanne, department of the Loire). (?) The Aulerci Brannovices, a tribe which dwelt between the SaÔne and the Loire, occupied the ancient country of Brionnais. The Blannovii, who occupied a territory round Blanot (SaÔne-et-Loire). (?) The Boii, a fraction of a great nomadic nation of this name, of Celtic origin, authorised by CÆsar to establish themselves on the territory of the Ædui, between the Loire and the Allier. The Segusiavi, who occupied the ancient Forez (departments of the RhÔne and the Loire), and extended to the left bank of the SaÔne. The Essuvii, established in the department of the Orne. The Helvetii, who were subdivided into four tribes or pagi; their territory occupied the part of Switzerland which extends from the north shore of the LÉman to the Lake of Constance. The Lemovices, whose territory answered to the Limousin (departments of the Upper Vienne and the greater part of the CorrÈze and the Creuse). The Lingones, whose territory embraced the greatest part of the department of the Haute-Marne and a fraction of the departments of the Aube, the Yonne, and the CÔte-d’Or. The Mandubii, established between the Ædui and the Lingones (department of the CÔte-d’Or), occupied the ancient country of Auxois. Alesia (Alise) was their principal oppidum. The Meldoe occupied the north of the department of the Seine-et-Marne and a small part of the department of the Oise. The Nitiobriges occupied the greatest part of the department of the Lot-et-Garonne and a fraction of the Tarn-et-Garonne. The Parisii, whose territory embraced the department of the Seine and a great part of the department of the Seine-et-Oise. Their principal town was Lutetia (Paris). The Petrocorii, established in the ancient PÉrigord (department of the Dordogne). The Rauraci, whose origin is perhaps German, established on both banks of the Rhine, towards the elbow which the river forms at BÂle. The Ruteni occupied the ancient province of Rouergne (department of the Aveyron). The Senones, established between the Loire and the Marne. Their principal town was Agedincum (Sens). Their territory comprised a part of the departments of the Yonne, the Marne, the Loiret, Seine-et-Marne, and the Aube. The Sequani, whose territory embraced the ancient Franche-ComtÉ (Jura, Doubs, Haute-SaÔne, and part of the Haut-Rhin). Principal town, Vesontio (BesanÇon). The Turones, who occupied Touraine (department of Indre-et-Loire). The peoples whom CÆsar calls maritime, or Armorican, were— The Ambibari, established at the point where the departments of La Manche and Ille-et-Vilaine join. The Ambiliates, whose territory comprised the part of the department of Maine-et-Loire situated to the south of the Loire. The Andes, occupying Anjon (department of Maine-et-Loire and a fraction of the department of the Sarthe). The CuriosolitÆ, occupying the greatest part of the department of the CÔtes-du-Nord. The Lemovices Armorici, fixed to the south of the Loire, in the southern part of the department of the Loire-InfÉrieure and the west of that of Maine-et-Loire. The Lexovii, occupying the department of Calvados, and a fraction of that of the Eure. The Namnetes, who occupied, in the department of the Loire-InfÉrieure, the right bank of the Loire. The Osismii, whose territory answered to the department of FinistÈre. The Pictones, occupying Poitou (departments of La VendÉe, the Deux-SÈvres, and the Vienne). The Redones, whose territory embraced the greatest part of the department of Ille-et-Vilaine. The Santones, occupying Saintonge, Aunis, and Angoumois (department of the Charente and the Charente-InfÉrieure, and a part of the department of the Gironde). The Unelli, the people of the ancient Contentin (department of La Manche). The Veneti, whose territory included the department of Morbihan. To these maritime peoples we must add—
We may also join to the Celtic populations—
The Ausci, who occupied the central part of the department of the Gers, the most powerful of the nations of Aquitaine, according to Pomponius Mela (III. 2). The Bigerriones occupied Bigorre (department of the Hautes-PyrÉnÉes). The Cocosates, established on the coasts of the Gulf of Gascony, in the Landes (the southern part of the department of the Gironde and the northern of the department of the Landes). The Elusates occupied the north-west part of the department of the Gers and part of that of the Lot-et-Garonne. The Gates, at the confluence of the Gers and the Garonne. The Garumni, in the south of the department of the Haute-Garonne. The Ptianes, probably towards Pau and Orthez. The Sibuzates appear to have occupied the ancient country of Soule (Basses-PyrÉnÉes). The Sotiates occupied the south-west part of the department of Lot-et-Garonne and a part of the departments of the Landes and the Gers. The Tarbelli occupied all the territory bordering upon the head of the Gulf of Gascony (departments of the Landes and the Basses-PyrÉnÉes). The Tarusates, established on the Adour, in the ancient Tursan (the south-east part of the department of the Landes). Peoples of Aquitaine (continued). The Vasates or Vocates, established in the country of Bazas (the south-east part of the department of the Gironde).
Considered in its ensemble, from Geneva to the Pas-de-l’Ecluse, the Rhone presents the appearance of an immense fosse from 100 to 120 mÈtres broad, with abrupt and very elevated scarp and counter-scarp. The parts where it does not present this character are few, and of relatively small extent. They are the only ones where operations for passing the river could be attempted—the only ones, consequently, which CÆsar would have need to fortify on the left bank. 1. From Geneva to the confluence of the Arve and the Rhone, an extent of 1½ kilomÈtres. Breadth of the river, 90 to 100 mÈtres.—The left bank is flat in the whole of this extent. The right bank has escarpments almost vertical, the height of which varies from 15 to 35 mÈtres. (See Plate 3, mean profile between Geneva and the Arve.) No attempt at passage could have taken place, neither at Geneva, nor between the town and the Arve. 2. From the Arve to the plateau of Aire-la-Ville, extent 12½ kilomÈtres.—After leaving the confluence of the Arve, the heights of the right bank of the Rhone increase in elevation; the escarpments become formidable.—The left bank is bordered with similar escarpments, and the river runs thus between high and abrupt banks, everywhere impassable. It preserves this character to a kilomÈtre above the ravine of Avril, near Peney. The profiles a a and b b give an idea of the escarpments of the banks from the Avre to the ravine of Avril. (See Plate 3.)—The heights which, on the right bank of the Rhone, extend from Vernier to Peney, sink gradually from one of these villages towards the other, and they form to the east of the ravine of Avril a plateau, the mean elevation of which above the bed of the river is only 20 mÈtres. Opposite, on the left bank, extends the plateau of Aire-la-Ville. Length 1,700 mÈtres; breadth, 700 mÈtres; mean elevation above the bed of the Rhone, 20 to 25 mÈtres. The heights of the Peney are well disposed for the establishment of an army, and the plateau of Aire-la-Ville would permit an army, the Rhone once passed, to deploy easily. But, in spite of these advantages, it is certain that the Helvetii attempted no operation on this side, for the Rhone flows at the foot of a slope of the height of from 14 to 16 mÈtres and an inclination of at least 45 degrees. 3. From the plateau of Aire-la-Ville to the point of Epeisses, extent 6 kilomÈtres.—Down the river from the escarpments of Peney, the heights of the right bank (heights of Russin) form with those of the left bank an immense amphitheatre, nearly circular, the arena of which would be the ground represented green on Plate 3 (diameter, 1½ kilomÈtres). From the heights of Russin we can descend into the plain to the water of the river. The Rhone, in this part, has never been deep or rapid. The left bank is little elevated, entirely flat opposite the mill of Vert, and the slope of the heights which command it is far from impracticable. Thus, it was here possible for the Helvetii to effect the passage of the river, and climb the heights of the left bank, if they had not been fortified or guarded. This operation presented least difficulty in the part t t o. And we can hardly doubt that the Romans fortified it to add to the natural obstacles, which were insufficient in this extent. (See the profile c c.) An attentive examination of the locality, the discovery of certain irregularities of ground, which we may be allowed to consider as vestiges, lead us to explain in the following manner the expression murum fossamque perducit. CÆsar took advantage of the mean heights at the foot of which the Rhone flows, to cause to be made, on the slope towards the river, and beginning with the crest, a longitudinal trench, of such a depth that the main wall had an elevation of 16 feet. The earth arising from the excavation was thrown down the side of the slope, and the crest was furnished with palisades. (See the profile of the retrenchment.) It was, properly speaking, a fosse, the scarp of which was higher than the counter-scarp. The hills on the left bank, which rise opposite Russin, are accessible, especially in an extent of 900 mÈtres, reckoning from the point where the ravine which descends to Aire-la-Ville opens upon the river. They form there, among other peculiarities of the ground, a terrace 8 mÈtres in breadth, rising from 13 to 14 mÈtres above the plain, and descending to this by a tolerably uniform talus of 45 degrees. The Romans would be able to prevent the access by means of the trench just described. They, no doubt, continued it to the point o, where the terrace ceases, and the heights become impracticable. It would then have been from 800 to 900 mÈtres long. If we continue to descend the Rhone, we meet, on the left bank, first with the perpendicular escarpments of Cartigny, which are 70 or 80 mÈtres in height, and then abrupt beaches to near Avully. Below Cartigny, the Rhone surrounds a little plain, very slightly inclined towards the river, and presenting a projection of land (v r) from 5 to 6 mÈtres high, with a talus of less than 45 degrees. The bank being of small elevation, the Helvetii might have landed there. To prevent this, the Romans opened, in the talus which fronted the Rhone, a trench similar to the preceding; it was 250 mÈtres long. The heights of Avully and Epeisses leave between them and the river a tolerably vast space, composed of two distinct parts. The first is formed of gentle slopes from Avully to a projection of land, q p; the other part is a plain comprised between this projection of land and the left bank of the river. On the right bank a torrent-like river, the London, debouches into flat ground named La Plaine. The Helvetii might have made their preparations for passing the Rhone there, and directed their efforts towards the western point of La Plaine, in face of the low and flat land comprised between the left bank and the escarpment q p. In this part the left bank is only from 1½ to 2 mÈtres high. Moreover, the slopes of Avully are not difficult to climb, and therefore the Romans must have sought to bar the passage in this direction. (See the broken profile d e f.) The escarpment q p, from its position and height, is easy to fortify. Its length is 700 mÈtres; its mean elevation above the plain, 18. It presents to the river a talus of less than 45 degrees. The Romans made in this talus, along the crest, a trench, forming wall and fosse. Its length was 700 mÈtres. 4. From the point of Epeisses to the escarpments of Etournel, extent 6 kilomÈtres.—From Epeisses to Chancy the Rhone flows in a straight line, and presents the appearance of a vast fosse, 100 mÈtres wide, the walls of which have an inclination of more than 45 degrees. (See the profile g g.) At 200 mÈtres above Chancy, at k, the character of the banks changes suddenly. The heights on the right sink towards the river in tolerably gentle slopes, through an extent of 2,300 mÈtres, reckoning from k to the escarpments of Etournel. Opposite, on the left bank, extends the plateau of Chancy. It presents to the Rhone, from k to z, in a length of 1,400 mÈtres, an irregular crest, distant from 50 to 60 mÈtres from the river, and commanding it by about 20 mÈtres. The side towards the Rhone, from k to z, presents slopes which are very practicable. (See the profile h h.) The position of Chancy was certainly the theatre of the most serious attempts on the part of the Helvetii. Encamped on the heights of the right bank, they could easily descend to the Rhone, and there make their preparations for passing, on an extent of 1,500 mÈtres. The river once crossed, they had only before them, from k to z, slopes which were practicable to debouch on the plateau of Chancy. The Romans had then to bar the gap k z by joining the impassable escarpments which terminate in k with those which commence at z, and which are also inaccessible. To effect this, they opened from one of these points to the other, in the upper part of the slope at the foot of which the Rhone flows, a longitudinal trench k z, similar to that already spoken of. It was 1,400 mÈtres in length. 5. From the escarpments of Etournel to the Pas-de-l’Ecluse, an extent of 6 kilomÈtres.—At the escarpments of Etournel, the Rhone removes from the heights on the right, and only returns to them towards the hamlet of the Isles, 2 kilomÈtres farther down. These heights form a vast semi-elliptical amphitheatre, embracing a plain slightly inclined towards the river. It is marked by a green tint on Plate 3. People can descend from all sides and approach the Rhone, the bank of which is flat. Opposite, the left bank presents insurmountable obstacles until below Cologny, at s. But below this point, from s to y, the bank is flat, and the heights situated behind are accessible on an extent of 2 kilomÈtres. The Helvetii, established on the heights of Pougny and Colonges, could descend to the Rhone, and cross it between Etournel and the hamlet of Les Isles. The Romans had thus to unite the escarpments which terminate at Cologny with the impracticable slopes of the mountain of Le Vuache. Here again we shall see that they took advantage of the peculiarities of the ground. At the village of Cologny, the heights form a triangular plateau, s u x, of which the point s advances like a promontory towards the Rhone, which it commands perpendicularly by at least 20 mÈtres. A projection of land, s u, bounds it in front, and separates it from a plain which extends to the river. The escarpment produced by this projection of land presents to the Rhone a slope of about 45 degrees. It rises over the plain about 14 mÈtres towards its extremity s, but diminishes gradually in height, until it is only 2 to 3 mÈtres in height near the point u. (See the profile n n.) The Romans hollowed, on the slope of the escarpment from s to u, a length of 800 mÈtres, a trench forming wall and fosse. The plateau of Cologny, situated in the rear, offered a favorable position for the defence of this retrenchment. (See the profile p p.) They prolonged their works towards the west as far as y; beyond that, the heights presented sufficient natural obstacles. We may thus estimate that, from Cologny to the mountain of Le Vuache, the Romans executed from 1,600 to 1,700 mÈtres of retrenchments. To sum up: the works executed on five principal points, between Geneva and the Jura, represent a total length of about 5,000 mÈtres, that is, less than the sixth part of the development of the course of the Rhone. Admitting that CÆsar had at his disposal 10,000 men, we may suppose that he distributed them in the following manner:—3,000 men on the heights of Avully, his head-quarters; 2,500 at Geneva; 1,000 on the plateau of Aire-la-Ville; 2,000 at Chancy; and 1,500 on the plateau of Cologny. These 10,000 men might be concentrated: in two hours, on the heights between Aire-la-Ville and Cartigny; in three hours, on the heights of Avully; in three hours and a half, on the plateau of Chancy; in three hours and a half, these troops, with the exception of those encamped at Geneva, might be brought together between Cologny and the fort of L’Ecluse. It would require five hours to carry the detachment from Geneva thither. The detachments mentioned above, with the exception of that of Geneva, were established in what CÆsar calls the castella. These were constructed on the heights, in the proximity of the retrenchments which had to be defended—namely, at Aire-la-Ville, Avully, Chancy, and Cologny. They consisted probably of earthen redoubts, capable of containing a certain number of troops. They are represented by squares in Plate 3. CÆsar could reconnoitre every instant the march and designs of the Helvetii, the heights of the left bank of the Rhone presenting a great number of positions where it was easy to place advantageously posts of observation. Commandant Stoffel has pointed out six, which are marked on Plate 3. As it will be observed, the Helvetii, in crossing the Rhone, could not be disturbed by darts thrown from the top of the retrenchments, for these darts would not carry to the left bank of the river. Now there exists at present, between this bank and the foot of the heights in which these trenches were cut, flat ground of more or less extent. Admitting, then, that the Rhone flowed nineteen centuries ago in the same bed as at the present day, we may ask if the Romans did not construct, in these low parts near the bank, ordinary retrenchments, composed of a fosse and rampart. The excavations undertaken by the Commandant Stoffel have revealed everywhere, in these plains, the existence of ground formed by alluvium, which would lead us to believe that the Rhone once covered them. However, even if at that epoch these little plains had been already uncovered, either wholly or in part, we can hardly suppose that CÆsar would have raised works there, since the heights situated in the rear permitted him, with less labour, to create a more redoubtable defence—that of the trenches opened along the crests. As we see, the obstacle presented to the assailants began only with these trenches, at the top of the slopes. As to the vestiges which still appear to exist, they may be described as follows. The slopes which the Romans fortified at Chancy, from k to z, and at Cologny, from s to y, present, in the upper parts, in some places, undulations of ground, the form of which denotes the work of man. On the slope of Chancy, for instance, the ground presents a projection, i i (see the profile h h), very distinctly marked, and having the remarkable peculiarity that it is about 11 feet high and 8 to 9 feet broad. Now, is it not evident that, if one of the fosses which have been described should get filled up, either naturally, by the action of time, or by the processes of agriculture, it would take absolutely the form i i, with the dimensions just indicated? It would not, therefore, be rash to consider these peculiarities of the ground, such as i i, as traces of the Roman trenches. We must further mention the projection of land v r, situated below Cartigny. Its form is so regular, and so sharply defined, from the crest to the foot of the talus, that it is difficult not to see in it the vestiges of a work made by men’s hands. It is easy to estimate approximately the time which it would have taken CÆsar’s troops to construct the 5,000 mÈtres of trenches which extended, at separate intervals, from Geneva to the Jura. Let us consider, to fix our ideas, a ground A D V, inclined at 45 degrees, in which is to be made the trench A B C D. The great wall A B C had 16 Roman feet in elevation: we will suppose that A B was inclined at 5 on 1, and that the small wall D C was 6 feet high. The amount of rubbish removed would be as follows:—Section A B C D = 64 square feet, or, reducing it into square mÈtres, A B C D = 5 square mÈtres 60 centimÈtres. The mÈtre in length of the earth thrown out would give thus 5·60 cubic mÈtres. If we consider the facility of labour in the trench, since the earth has only to be thrown down the slope, we shall see that two men can dig three mÈtres in length of this trench in two days. Therefore, admitting that the 10,000 men at CÆsar’s disposal had only been employed a quarter of the time, from two to three days would have been sufficient for the execution of the complete work.
According to this reckoning, CÆsar required 60 days, reckoning from the moment when he decided on this course, to transport his legions from Aquileia to Lyons; that is to say, if he sent, as is probable, couriers on the 8th of April, the day he refused the passage to the Helvetii, the head of his column arrived at Lyons towards the 7th of June. We suppose that the horses of the emigrants drew only 500 kilogrammes in excess of the dead weight, which would give about 6,000 carriages and 24,000 draught animals to transport the three months’ provisions. But these emigrants were not only provided with food, for they had also certainly baggage. It appears to us no exaggeration to suppose that each individual carried, besides his food, fifteen kilogrammes of baggage on an average. We are thus left to add to the 6,000 provision carriages about 2,500 other carriages for the baggage, which would make a total of 8,500 carriages drawn by 34,000 draught animals. We use the word animals instead of horses, as at least a part of the teams would, no doubt, be composed of oxen, the number of which would diminish daily, for the emigrants would be led to use the flesh of these animals for their own food. Such a column of 8,500 carriages, supposing them to march in file, one carriage at a time, on a single road, could not occupy less than thirty-two leagues in length, if we reckon fifteen mÈtres to each carriage. This remark explains the enormous difficulties the emigration would encounter, and the slowness of its movements: we need, then, no longer be astonished at the twenty days which it took three quarters of the column to pass the SaÔne. We have not comprised the provisions of grain for the animals themselves: yet it is difficult to believe that the Helvetii, so provident for their own wants, had neglected to provide for those of their beasts, and that they had reckoned exclusively for their food on the forage they might find on the road. The only means of going from the Lower SaÔne into Saintonge consists in travelling at first to the north-west towards the sources of the Bourbince, where is found the greatest depression of the chain of mountains which separates the SaÔne from the Loire, and marching subsequently to the west, to descend towards the latter river. This is so true, that at an epoch very near to our own, before the construction of the railways, the public conveyances, to go from Lyons to La Rochelle, did not pass by Roanne, but took the direction to the north-west, to Autun, and thence to Nevers, in the valley of the Loire. We understand, in exploring this mountainous country, why CÆsar was obliged to confine himself to pursuing the Helvetii, without being ever able to attack them. We cannot find a single point where he could have gained upon them by rapidity of movement, or where he could execute any manoeuvre whatever. Pliny (Hist. Nat., VII. 60) remarks that, “at the time when the Twelve Tables were compiled, the only divisions of time known were the rising and setting of the sun; and that, according to the statement of Varro, the first public solar dial was erected near the rostra, on a column, by M. Valerius Messala, who brought it from Catania in 491, thirty years after the one ascribed to Papirius; and that it was in 595 that Scipio Nasica, the colleague of M. Popilius LÆnas, divided the hours of night and day, by means of a clepsydra or water-clock, which he consecrated under a covered building.” Censorinus (De Die Natali, xxiii., a book dated in the year 991 of Rome, or 338 A.D.) repeats, with some additions, the details given by Pliny. “There is,” he says, “the natural day and the civil day. The first is the time which passes between the rising and setting of the sun; on the contrary, the night begins with the setting and ends with the rising of the sun. The civil day comprises a revolution of the heaven—that is, a true day and a true night; so that when one says that a person has lived thirty days, we must understand that he has lived the same number of nights. “We know that the day and the night are each divided into twelve hours. The Romans were three hundred years before they were acquainted with hours. The word hour is not found in the Twelve Tables. They said in those times, ‘before or after mid-day.’ Others divided the day, as well as the night, into four parts—a practice which is preserved in the armies, where they divide the night into four watches.” Upon these and other data, M. Le Verrier has had the goodness to draw up a table, which will be found at the end of the volume, and which indicates the increase or decrease of the hours with the seasons, and the relationship of the Roman watches with our modern hours. (See Appendix B.) The shaft, sometimes round, sometimes square, had a diameter of from 25 to 32 millimÈtres. It was fixed to the head by ferules, or by pegs, or by means of a socket. Such are the characteristics presented by the fragments of pila found at Alise. They answer in general to the descriptions we find in Polybius (VI. 28), in Dionysius (V. 46), and in Plutarch (Marius). Pila made on the model of those found at Alise, and weighing with their shaft from 700 grammes to 1·200 kilog., have been thrown to a distance of 30 and 40 mÈtres: we may therefore fix at about 25 mÈtres the average distance to which the pilum carried. CÆsar employs three times the word tumulus to designate the eminence on which his interview with Ariovistus took place, and he never calls it collis. Is it not evident from this that we must consider this tumulus as a rounded knoll, insulated in the plain? Now it is to be considered that the plain which extends to the north of the Doller, between the Vosges and the Rhine, contains a rather large number of small rounded eminences, to which the word collis would not apply, and which the word knoll or tumulus perfectly describes. The most remarkable of these are situated, one near Feldkirch, the other between Wittenheim and Ensisheim. We may suppose that the interview took place on one of these knolls, marked 231 on Plate 6. General de Goeler has adopted as the place of the interview an eminence which rises on the left bank of the Little Doller, to the north of the village of Aspach-le-Bas. CÆsar would have called this eminence collis, for it is rather extensive, and, by its elongated form, but not rounded, does not at all represent to the eye what is commonly called a knoll or tumulus; moreover, contrary to the text, this elevation is not, properly speaking, in the plain. It is only separated from the hills situated to the south by a brook, and the plain begins only from its northern slope. Modern writers, supposing erroneously that CÆsar had indicated the distance, that is, the shortest line from the field of battle to the Rhine, have discussed lengthily the number to be adopted. They have overlooked the fact that the Latin text states, not exactly the distance from the field of battle to the Rhine, but the length of the line of retreat from the battle-field to the river. This line may have been oblique towards the Rhine, for it is probable that the retreat of the Germans lay down the valley of the Ill, which they had previously ascended. We must therefore seek towards Rhinau the point where they attempted to re-pass the river. In a regular siege the vineÆ were constructed out of reach of the missiles, and they were then pushed in file one behind the other up to the wall of the place attacked, a process which was termed agere vineas; they thus formed long covered galleries which, sometimes placed at right angles to the wall and sometimes parallel, performed the same part as the branches and parallels in modern sieges. Another locality, Sautour, near Philippeville, would answer completely to CÆsar’s description, but the compass of Sautour, which includes only three hectares, is too small to have contained 60,000 individuals. The site of the citadel of Namur is already in our eyes very small. With winds blowing from below, it matters not from what point, the Romans could not have gone in search of their enemies, or the latter come to meet them. Supposing that, in one tide, the Roman fleet had arrived at the mouth of the Loire towards five o’clock in the morning; it might have been towards ten o’clock, the moment when the battle commenced, between Haedik and Sarzeau. Supposing similarly that, as early as five o’clock in the morning, the movement of the Roman fleet had been announced to the Veneti, they could, in five hours, have issued from the river Auray, defiled by the entrance of the Morbihan, rallied and advanced in order of battle to meet the Romans in the part of the sea above described. As to the place where CÆsar encamped, it is very probable, as we have said, that it was on the heights of Saint-Gildas; for from thence he could see the dispositions of the enemy, and perceive far off the approach of his fleet. In case of check, the Roman galleys found, under his protection, a place of refuge in the Vilaine. Thus, he had his rear secured; rested upon the towns of the coast which he had taken; could recall to him, if necessary, Titurius Sabinus; and lastly, could cross the Vilaine, to place that river between him and his enemies. Placed, on the contrary, on the other side of the Bay of Quiberon, he would have been too much enclosed in an enemy’s country, and would have had none of the advantages offered by the position of Saint-Gildas. We learn from the “Commentaries” that in 699 he debouched in the country of the Ubii, and that two years later it was a little above (paulum supra) the first bridge that he established another, which joined the territory of the Treviri with that of the Ubii. Now everything leads to the belief that, in the first passage as in the second, the bridge was thrown across between the frontiers of the same peoples; for we cannot admit, with some authors, that the words paulum supra apply to a distance of several leagues. As to those who suppose that the passage was effected at Andernach, because, changing with Florus the Meuse (Mosa) into Moselle, they placed the scene of the defeat of the Germans at the confluence of the Moselle and the Rhine, we have given the reasons for rejecting this opinion. We have endeavoured to prove, in fact, that the battle against the Usipetes and the Tencteri had for its theatre the confluence of the Meuse and the Rhine; and since, in crossing this latter river, CÆsar passed from the country of the Treviri into that of the Ubii, we must perceive that after his victory he must necessarily have proceeded up the valley of the Rhine to go from the territory of the Menapii to the Treviri, as far up as the territory of the Ubii, established on the right bank. This being admitted, it remains to fix, within the limits assigned to these two last peoples, the most probable point of passage. Hitherto, Cologne has been adopted; but, to answer to the data of the “Commentaries,” Cologne appears to us to be much too far to the north. In fact, in the campaign of 701, CÆsar, having started from the banks of the Rhine, traversed the forest of the Ardennes from east to west, passed near the Segni and the Condrusi, since they implored him to spare their territory, and directed his march upon Tongres. If he had started from Cologne, he would not have crossed the countries in question. Moreover, in this same year, 2,000 Sicambrian cavalry crossed the Rhine thirty miles below the bridge of the Roman army. Now, if this bridge had been constructed at Cologne, the point of passage of the Sicambri, thirty miles below, would have been at a very great distance from Tongres, where, nevertheless, they seem to have arrived very quickly. On the contrary, everything is explained if we adopt Bonn as the point of passage. To go from Bonn to Tongres, CÆsar proceeded, as the text has it, across the forest of the Ardennes; he passed through the country of the Segni and Condrusi, or very near them; and the Sicambri, crossing the Rhine thirty miles below Bonn, took the shortest line from the Rhine to Tongres. Moreover, we cannot place CÆsar’s point of passage either lower or higher than Bonn. Lower, that is, towards the north, the different incidents related in the “Commentaries” are without possible application to the theatre of the events; higher, towards the south, the Rhine flows upon a rocky bed, where the piles could not have been driven in, and presents, between the mountains which border it, no favourable point of passage. We may add that CÆsar would have been much too far removed from the country of the Sicambri, the chastisement of whom was the avowed motive of his expedition. Another fact deserves to be taken into consideration: that, less than fifty years after CÆsar’s campaigns, Drusus, in order to proceed against the Sicambri—that is, against the same people whom CÆsar intended to combat—crossed the Rhine at Bonn. (Florus, IV. 12.) “HÆc utraque insuper bipedalibus trabibus immissis, quantum eorum tignorum junctura distabat, binis utrimque fibulis ab extrema parte distinebantur; quibus disclusis atque in contrariam partem revinctis, tanta erat operis firmitudo atque ea rerum natura, ut, quo major vis aquÆ se incitavisset, hoc arctius illigata tenerentur.” (De Bello Gallico, IV. 17.) It has not been hitherto observed that the words hÆc utraque relate to the two couples of one row of piles, and not to the two piles of the same couple. Moreover, the words quibus disclusis, &c., relate to these same two couples, and not, as has been supposed, to fibulis. The proofs of the above assertion result from several facts related in different notices on the town of Dover. It is there said that in 1784 Sir Thomas Hyde Page caused a shaft to be sunk at a hundred yards from the shore, to ascertain the depth of the basin at a remote period; it proved that the ancient bed of the sea had been formerly thirty English feet below the present level of the high tide. In 1826, in sinking a well at a place called Dolphin Lane, they found, at a depth of twenty-one feet, a bed of mud resembling that of the present port, mixed with the bones of animals and fragments of leaves and roots. Similar detritus have been discovered in several parts of the valley. An ancient chronicler, named Darell, relates that “Wilbred, King of Kent, built in 700 the church of St. Martin, the ruins of which are still visible near the market-place, on the spot where formerly ships cast anchor.” The town built under the Emperors Adrian and Septimus Severus occupied a part of the port, which had already been covered with sand; yet the sea still entered a considerable distance inland. (See Plate 17.) It would appear to have been about the year 950 that the old port was entirely blocked up with the maritime and fluvial alluvium which have been increasing till our day, and which at different periods have rendered it necessary to construct the dykes and quays which have given the port its present form. Mr. Lewin appears to have represented as accurately as possible the appearance of Romney Marsh in the time of CÆsar, in the plate which accompanies his work. The part not covered by the sea extended, no doubt, as he represents it, from the bay of Romney to near Hythe, where it terminated in a bank of pebbles of considerable extent. But it appears to us that it would have been difficult for the Roman army to land on a bank of pebbles at the very foot of the rather steep heights of Lymne. Mr. Lewin places the Roman army, in the first expedition, at the foot of the heights, on the bank of pebbles itself, surrounded on almost all sides by the sea. In the second expedition, he supposes it to have been on the heights, at the village of Lymne; and, to explain how CÆsar joined his fleet to the camp by retrenchments common to both, he admits that this fleet was drawn on land as far as the slope of the heights, and shut up in a square space of 300 mÈtres each side, because we find there the ruins of an ancient castle called Stutfall Castle. All this is hardly admissible. But did CÆsar reach the Little Stour towards Barham and Kingston or towards Littlebourne? The doubt is allowable. We believe, nevertheless, that the country of Barham and Kingston agrees best with the idea we form from reading the “Commentaries.” The heights on the left bank of the Little Stour are not so broken as to prevent chariots and cavalry from manoeuvring on them, and the Britons might have occupied, as the text requires, a commanding position, locus superior, on the banks which end at the river in gentle slopes. This stream, considering its little depth, does not form any real obstacle. Now it appears, in fact, to result from the recital of the “Commentaries,” that the engagement as it was not of a serious character, and that CÆsar’s cavalry passed it without difficulty. This last fact forms an objection to the Great Stour, which several authors, and among others General de Goeler, take for the flumen of the text; it is sufficiently broad and sufficiently steep-banked towards Sturry, where they place the scene of the action, to render the passage difficult for cavalry. Moreover, Sturry is fifteen, and not twelve miles from the coast of Deal. The Roman camp must have been on flat ground, to allow of the possibility of drawing up the ships of the fleet. Supposing that the mean size of each ship was twenty-five mÈtres long by six mÈtres broad, and that the 800 ships composing the fleet had been placed at two mÈtres from each other, on five lines separated by a distance of three mÈtres, the fleet would have covered a rectangle of 1,280 mÈtres by 140, joined with the camp by other trenches. It is, of course, understood that the lightest boats would form the line farthest from the sea. Unfortunately, it is no more possible to ascertain the exact place where CÆsar crossed the Thames by a ford. We are convinced of this by the researches of all kinds made by the officers Stoffel and Hamelin. The boatmen of the Thames all assured them that between Shepperton and London there are now reckoned eight or nine places fordable; the most favourable is that at Sunbury. At Kingston, where General de Goeler places the passage, nothing leads us to suppose that a ford ever existed. The same thing must be said of Coway Stakes. At Halliford, in spite of the termination of the word, the inhabitants have no tradition of an ancient ford. The only thing which appears to us evident is, that the Roman army did not pass below Teddington. We know that this village, the name of which comes from Tide-end-town, marks the last point of the Thames where the tide is felt. We cannot believe that CÆsar would expose himself to be surprised during his passage by an increase of the volume of water. It is evident that criers had been posted beforehand from Genabum to Gergovia, since it was agreed that the Carnutes should give the signal of war. It is exactly 160 miles (about 240 kilomÈtres), through the valleys of the Loire and the Allier, from Gien to Gergovia, the principal oppidum of the Arverni. Thus Cicero gives it this sense in his Philippica Prima, § 13, where he reminds us of the conduct of Antony after the death of CÆsar. Antony had begun by treating with the conspirators who had taken refuge in the Capitol, and, at a sitting of the Senate, which he called together ad hoc, on the day of the Liberalia, that is to say, the 16th of the Calends of April, an amnesty was pronounced in favour of the murderers of CÆsar. Cicero, speaking of this session of the Senate, says, Proximo, altero, tertio, denique reliquis consecutis diebus, &c. Is it not evident that here altero die signifies the second day which followed the session of the Senate, or two days after that session? Here are other examples which show that the word alter must be taken in the sense of secundus. Virgil says (Eclogue VIII., line 39), Alter ab undecimo tum jam me ceperat annus, which must be translated, I was thirteen years old. Servius, who composed a commentary on Virgil at a time when the traditions were still preserved, makes the following comment on this verse: Id est tertius decimus. Alter enim de duobus dicimus ut unus ab undecimo sit duodecimus, alter tertius decimus, et vult significare jam se vicinum fuisse pubertati, quod de duodecimo anno procedere non potest. (Virgil, edit. Burmann, tom. I., p. 130.) Forcellini peremptorily establishes that vicesimo altero signifies the twenty-second; legio altera vicesima means the twenty-second legion. The “Commentaries” inform us (De Bello Civili, III. 9) that Octavius, when besieging Salona, had established five camps round the town, and that the besieged took those five camps one after the other. The text is thus expressed: Ipsi in proxima Octavii castra irruperunt. Mis expugnatis, eodem impetu, altera sunt adorti; inde tertia et quarta, et deinceps reliqua. (See also De Bello Civili, III. 83.) In the “Commentaries” we find sixty-three times the expression postero die, thirty-six times proximo die, ten times insequenti die, eleven times postridie ejus diei, or pridie ejus diei. The expression altero die is used only twice in the eight books De Bello Gallico, viz., lib. VII. cc. 11 and 68, and three times in De Bello Civili, lib. III. cc. 19, 26, and 30. Is that coincidence alone not sufficient to make us suppose that altero die ought not to be confounded with the preceding expressions; and does it not appear certain that, if CÆsar had arrived at Vellaunodunum the morning after his departure from Agedincum, he would have written, Postero die (or proximo die) quum ad oppidum Senonum Vellaunodunum venisset, &c.? We believe, therefore, that we are authorized in concluding that CÆsar arrived at Vellaunodunum the second day after the army moved. Farther on, on page 339, will be found a new confirmation of the sense which we give to altero die. It results from the appreciation of the distance which separates Alesia from the battle-field where CÆsar defeated the cavalry of Vercingetorix. (See the opinions of the commentators on altero die in the sixth volume of Cicero, edit. Lemaire, Classiques Latins, Excursus ad Philippicam primam.) As CÆsar’s object, on quitting Sens, was to march as quickly as possible to the oppidum of the Boii, in order to raise the siege, since he starts without baggage, so as to be less impeded in his march, we will first examine the probable position of this latter town, before discussing the question relating to the intermediate points. Gorgobina Boiorum. After the defeat of the Helvetii, CÆsar allowed the Ædui to receive the Boii upon their territory, and it is probable that they were established on the western frontier, as in an advanced post against the Arverni and the Bituriges. Several data confirm this opinion. Tacitus (Histor., II. 61) relates that: Mariccus quidam, e plebe Boiorum,.... concitis octo millibus hominum, proximos Æduorum pagos trahebat. The possessions of the Boii were, therefore, contiguous to the Æduan territory. Pliny the Elder (Hist. Nat., IV. 18) places the Boii in the number of the nations who inhabited the centre of the Lyonnaise. Intus autem Ædui foederati, Carnuti foederati, Boii, Senones.... The place here occupied by the word Boii shows us again that this people was not far from the Ædui, the Senones, and the Carnutes. Lastly, the text of the “Commentaries” represents Vercingetorix as obliged to traverse the country of the Bituriges to repair to Gorgobina. The most plausible opinion is that which places the Boii between the Loire and the Allier, towards the confluence of these two rivers. This was already an old tradition, adopted in the fifteenth century by Raimondus Marlianus, one of the first editors of CÆsar. This space of ground, covered in its eastern part with woods and marshes, was admirably suited by its extent to the limited population of the Boii, who did not number more than 20,000 souls. Neither Saint-Pierre-le-Moutier, marked on the map of Gaul as Gorgobina, nor La Guerche, proposed by General de Goeler, answer completely, by their topographical position, to the site of a Gaulish oppidum. In fact, Saint-Pierre-le-Moutier is far from being advantageously situated; this village stands at the foot of the hills which border the right bank of the Allier. La-Guerche-sur-Aubois fulfils no better the conditions of defence which must be required in the principal town of the Boii: it is situated almost in a plain, on the edge of a marshy valley of the Aubois. It presents a few remains of fortifications of the Middle Ages, but not a trace of more remote antiquity has been discovered in it. To seek Gorgobina farther down, and on the left bank of the Loire, is impossible, since, according to CÆsar, the Boii had been established on the territory of the Ædui, and the Loire formed the boundary between the Ædui and the Bituriges. If we are reduced to conjectures, we must at least admit as incontestable what is advanced by CÆsar. The village of Saint-Parize-le-ChÂtel suits better. It is about eight kilomÈtres to the north of Saint-Pierre-le-Moutier, nearly in the middle of the space comprised between the Loire and the Allier; it occupies the centre of ancient agglomeration of inhabitants, which Guy Coquille, at the end of the sixteenth century, designates under the name of the bourg de Gentily, and which the chronicles called, down to the thirteenth and fourteenth centuries, Pagus Gentilicus, or bourg des gentils. The history of this people has this remarkable peculiarity, that, whilst all the neighbouring nations on the other side of the Allier and the Loire had, as early as the fourth century, accepted the Christian religion, they alone continued in idolatry until the sixth century. Does this fact apply to a tribe settled in a foreign country, as the Boii were, who would retain their customs and religion for a longer time unchanged? An ancient tradition states that, in the environs of Saint-Parize, there was, at a very remote period, a considerable town, which was destroyed by a fire. A few scattered foundations, discovered in the woods of Bord, to the south-west of Saint Parize, seem to indicate the site of the oppidum of the Boii. The name of the castle, of the domain, and of the place called Les BruyÈres de Buy, remind us of that of the Boii. There was probably a Roman station at Saincaise-Meauce (thirteen kilomÈtres to the north of Saint-Pierre-le-Moutier), on the right bank of the Allier. In 1861, there were discovered there numerous objects of the Gallo-Roman period, and two busts in white marble, life-size, representing Roman emperors. At Chantenay, eight kilomÈtres south from Saint-Pierre, a few Roman foundations have been found, and a considerable number of Gaulish coins, one of which, amongst others, bears the name of the Æduan Litavicus. Genabum. The position of Gorgobina once established at the confluence of the Loire and the Allier, we must admit Gien as the ancient Genabum, and not Orleans, for the following reasons:— 1st. We cannot believe that CÆsar, leaving Sens in spite of the rigour of the season, and in haste to raise the siege of Gorgobina, should, without any reason, have taken a circuitous road of seventy-five kilomÈtres, which would represent three or four days march, in order to pass by Orleans. In fact, the distance from Sens to the confluence of the Allier and the Loire, is, by Orleans, 270 kilomÈtres, whilst it is only 180 kilomÈtres by the way of Gien. 2nd. From Sens to Gien the road was short and easy; on the contrary, from Sens to Orleans it was necessary to pass the great marsh of Sceaux and the forest of Orleans, probably impracticable. Now, the road indicated on the Peutingerian Table, as leading from Orleans to Sens, must have had a decided curve towards the south, and passed close by Gien, after having passed through AquÆ-Segeste (Craon and CheneviÈre), for the distance between Sens and Orleans is marked at fifty-nine Gaulish leagues, or 134 kilomÈtres. The Roman road, which leads directly from Sens to Orleans, by way of Sceaux, and which the itineraries do not mention, has only a length of 110 kilomÈtres: it is certainly less ancient than the former, and can never have been a Gaulish road. 3rd. The “Commentaries” inform us that the news of the insurrection of Genabum arrived in a short time among the Averni (of whom Gergovia, near Clermont, was the principal centre), at a distance of 160 miles (237 kilomÈtres) from Genabum. Now, the distance from Gien to Gergovia, by the valleys of the Loire and the Allier, is 240 kilomÈtres, which agrees with the text, whilst from Orleans to the same spot it is 300 kilomÈtres. 4th. After having crossed the Loire at Genabum, CÆsar was in the territory of the Bituriges. This is true if he passed by Gien, and false if he passed by Orleans, since, opposite Orleans, the left bank belonged to the territory of the Carnutes. It is true that it has been pretended that Gien belonged to the ancient diocese of Auxerre, and that, consequently, it was in the territory of the Senones, and not in that of the Carnutes. The limits of the ancient dioceses cannot be considered as indicating in an absolute manner the frontiers of the peoples of Gaul; and we cannot admit that the territory of the Senones formed an acute angle upon the territory of the Carnutes, the summit of which would be occupied by Gien. Moreover, whatever change it may have experienced in feudal times, in regard to its diocesan attribution, Gien has never formed a part of the OrlÉanais, in its civil and political relations. In 561, Gien was included in the kingdom of Orleans and Burgundy. We believe, therefore, that Genabum was, not old Gien, which, notwithstanding its epithet, may be posterior to CÆsar, but the present Gien. This little town, by its position on the banks of the Loire, besides containing a hill very appropriate for the site of an ancient oppidum, possesses sufficiently interesting ruins, and agrees much better than Old Gien with the oppidum of the Carnutes. Without attaching too great faith to traditions and etymologies, we must, nevertheless, mention a gate at Gien, which, from time immemorial, has been called CÆsar’s Gate (la Porte de CÉsar); a street called À la Genabye, which leads, not towards Orleans, but towards the high part of town; a piece of ground, situated to the north of Gien, at the angle formed by the road to Montargis and the Roman road, at a distance of about one kilomÈtre, which still preserves the name of the Field of the Camp (La PiÈce du Camp). Perhaps this is the spot where CÆsar placed his camp, opposite the most accessible part of the town. The principal reason why Orleans has been taken for Genabum is that the Itinerary of Antoninus indicates that town under the name of Cenabum or Cenabo, and that this name is also found in some lately discovered inscriptions. It may be supposed that the inhabitants of Gien, after having escaped from the destruction of their town, descended the river, and, on the spot where Orleans now stands, formed a new establishment, to which they gave the name of the first city; in the same manner the inhabitants of Bibracte removed to Autun, and those of Gergovia to Clermont. Independently of the above considerations, Orleans, by its position on a declivity uniformly inclined toward the Loire, does not at all answer to the conditions of a Gaulish oppidum. If we admit Orleans to be Genabum, it becomes very difficult to assign a convenient site for the oppida of Vellaunodunum and Noviodunum. Vellaunodunum. The situation of the territory of the Boii being admitted, as well as that of Genabum, we have to find, on the road which CÆsar pursued from Sens to Gorgobina, the intermediate points of Vellaunodunum and Noviodunum. On the direct line from Sens to Gien, at the distance of 40 kilomÈtres from Sens, we meet with the little town of TriguÈres. The hill which overlooks it from the north agrees with the position of the ancient oppidum; the remains of walls, fosses, and parapets have been found on it. Farther, there were discovered in 1856, at 500 mÈtres to the north-west of TriguÈres, the ruins of a large semi-elliptical theatre, capable of containing from 5,000 to 6,000 spectators. In another direction, the ruins of a Druidical monument have been pointed out; in fact, everything leads to the belief that there existed at TriguÈres, in the Gallo-Roman period, an important centre, which had been preceded by a Gaulish establishment anterior to the conquest. A road paved with stones, considered by some as a Gaulish or Celtic way, but accepted by all archÆologists as a Roman road, goes direct from Sens to TriguÈres, by Courtenay, and passes along the eastern side of the oppidum. Another ancient way leads similarly from TriguÈres to Gien. We feel no hesitation, after what precedes, in placing Vellaunodunum at TriguÈres. It will be objected that the distance from Sens to this little town (40 kilomÈtres) is too small to have taken the Roman army, without baggage, three days’ march; but CÆsar does not say that he employed three days in proceeding from Agedincum to Vellaunodunum: he informs us merely that, leaving all his baggage at Agedincum, he journeyed towards the country of the Boii, and that on the second day he arrived at Vellaunodunum. Nothing, therefore, obliges us to suppose that, before it marched, the Roman army was concentrated or encamped at Agedincum itself. Persons unacquainted with military art are apt to suppose that an army lives and marches always concentrated on one point. CÆsar, although he was effecting the concentration of his troops before entering into campaign, did not keep them massed at the gates of Sens, but he probably distributed them in Échelon in the neighbourhood of the town, along the Yonne. When afterwards he decided on marching to the succour of the Boii, we must suppose that the first day was employed in concentrating the whole army at Sens itself, in leaving the baggage there, perhaps also in crossing the Yonne, a long operation for more than 60,000 men. The first day having passed, the army continued its march next day, and arrived at TriguÈres the day following, having performed two days’ march of 20 kilomÈtres each. We see, then, that the distance between Sens and TriguÈres does not prevent us from identifying this latter locality with Vellaunodunum. TriguÈres is distant 44 kilomÈtres from Gien, the distance which separated Vellaunodunum from Genabum, and which might have been marched in two days. Noviodunum. To find the site of Noviodunum, we must seek a position which agrees best with the “Commentaries” in the triangle formed by the three known points, Gien, Le Bec-d’Allier, and Bourges. Since, according to the text, Vercingetorix did not raise the siege of the town of the Boii until he had heard of CÆsar’s arrival on the left bank of the Loire, and since the two hostile armies, marching towards each other, met at Noviodunum, it follows that this last-named town must be about half-way between the spot where the Loire was passed and the town of the Boii; on another hand, since CÆsar took several days to reach Bourges from Noviodunum, there must have been a rather considerable distance between those two last-named towns. Moreover, in order that the inhabitants of Noviodunum should have seen in the distance, from the top of their walls, the cavalry of Vercingetorix, the town must necessarily have been situated on an eminence. Lastly, the cavalry combat, fought at a small distance from the town, proves that the ground was sufficiently flat to permit that engagement. It is, therefore, because certain points hitherto indicated do not answer to the conditions required by the text, that we have not admitted, as representing Noviodunum, the towns of Nouan-le-Fuselier, Pierrefitte-sur-Saudre, Nohant-en-GoÛt, Neuvy-en-Sullias, or Neuvy-sur-Barangeon. In fact, some of these are too far from Bec-d’Allier, while others are too near Bourges, and most of them are situated in a plain. Sancerre, on the contrary, answers all the conditions of the text. It is situated on a hill which rises 115 mÈtres above the valley watered by the Loire. Encircled on all sides by deep ravines, it can only be approached from one point, situated to the east, where the ancient Roman road of Bourges terminated, which is still at the present day called the Big Road (le Gros Chemin). The AbbÉ Leboeuf, as early as 1727, had designated this town as the ancient Noviodunum. It is near Saint-Satur, at the very foot of the mountain of Sancerre, that a Gallo-Roman town existed, of which, within the last few years, numerous foundations have been found. It is probable that this Gallo-Roman town had succeeded to a great centre of Gaulish population, for the Bituriges must necessarily have occupied in their territory a point so admirably fortified by nature, and which commanded the course of the Loire, the line of boundary between them and the Ædui. The present town seems to have kept within the very limits of the ancient oppidum; it has the form of an ellipse of from 700 to 800 mÈtres in length on a breadth of about 500 mÈtres, capable of containing a population of from 4,000 to 5,000 inhabitants. At Sancerre there was also, at the extremity of one of the streets, towards the north, a gate called the Gate of CÆsar (Porte de CÉsar), which was demolished in the beginning of the nineteenth century. By adopting Sancerre, all the movements of the commencement of the campaign of 702 are easily explained. This town is forty-six kilomÈtres from Gien, forty-eight kilomÈtres from Le Bec-d’Allier, distances nearly equal, so that Vercingetorix and CÆsar, starting almost at the same time from two opposite points, may have met under its walls. Its elevated position allowed the eye to range far towards the south along the valley of the Loire, through which the inhabitants would have seen the approach of the cavalry of Vercingetorix. CÆsar may have occupied with his army the heights of Verdigny or Saint-Satur, to the north of Sancerre. A cavalry engagement may have taken place in the valley of Saint-Satur, or on the plain between MÉnÉtrÉol and Saint-Thibaud. The captain of staff Rouby has examined with the greatest care the places just mentioned. CÆsar, after the surrender of Noviodunum, marches towards Bourges. Vercingetorix follows him by short marches (minoribus itineribus). The Roman general, having Bourges before him, and a hostile army on his left, marches slowly and with precaution. Perhaps he took three or four days to perform the forty-five kilomÈtres which separate Sancerre from Bourges. At last, after having reconnoitred the site of Avaricum, he must have traversed the marshes of the YÈvre, at a distance of three or four kilomÈtres from that town, so as to take up a position to the south-east of the oppidum, in that part which was not surrounded by the river and the marshes, and which only offered a narrow passage. As to Vercingetorix, he follows, or rather hovers on, the Roman army, taking up his position on its left, and still keeping up his communication with Avaricum, hesitating whether he shall deliver it to the flames. The excavations made in 1862 brought the two camps to light. The fosses of the little camp are clearly defined in the calcareous soil. They form an irregular outline, represented on Plate 22. The Roche-Blanche, which presents in its southern part an escarpment almost as perpendicular as a wall, has lost on the sides its abrupt form by successive landslips, the last of which took place within memory of the inhabitants. The communication between the great and little camps was composed of a parapet, formed by the earth thrown out of two contiguous fosses, each four feet in depth and six in breadth, so that the breadth of the two together is only twelve feet. If we wonder that the Romans should have dug two little ditches, each six feet broad and four feet deep, instead of making one eight feet wide by six feet deep, which would have given the same amount of soil to take out, it may be answered that the two little ditches were much more quickly made than one large ditch.
The spot which it was important for the Gauls to fortify was the part D E of the heights of Rissoles which are opposite the village of Opme, because troops could only scale the mass by the western slope. How can any one suppose that, fearing for the defile of the Goules, the Gauls would have abandoned their camp before the place to go and entrench themselves on Montrognon, three kilomÈtres from Gergovia? How admit that CÆsar, to threaten the defile, would have sent troops to make the circuit of the mountain of Gergovia by the north? How could the legion, which supported this movement, without advancing far, and which concealed itself in the woods, have assisted in the stratagem, if the false attack had been made to the east and to the north of Gergovia, at two leagues from the camp? In passing by the south, that is, by the defile of Opme, the legion was always in communication with the camps, on which it could fall back, and the broken and wooded ground prevented the Gauls from knowing accurately the importance of the attack. Besides, two facts which result from the “Commentaries” prove that the Gauls were not very far from the oppidum. CÆsar sees the southern front abandoned, and he establishes his legions at a distance of 1,200 paces from the place. The soldiers scale the heights at a rapid pace; but scarcely have they reached the principal enclosure, when the Gauls, who hear the cries of the women and of the small number of defenders left in the place (primo exaudito clamore), have time to hurry to them, and drive back the Romans. Consequently, the Gauls were at a distance where the cries could be heard; and this distance may be measured by the time which the attacking columns must have taken to climb the space of 1,200 paces, since they arrived almost simultaneously. We believe, therefore, that they were at a distance of less than two kilomÈtres from the gate O of the town, engaged in fortifying the plateau of the heights of Risolles. General de Goeler, without having seen the locality, has indicated nearly the site of the Roman camp; but he does not place it sufficiently to the west. He makes the Gaulish troops encamp on the four slopes of the mountain of Gergovia. It is, no doubt, the expression circum se (VII. 36) which led him into this error. It is, indeed, impossible to admit that the Gauls could have encamped on the abrupt slopes of the northern declivity. General de Goeler is also mistaken in directing the false attack upon Montrognon. Lastly, he places the scene of the battle too much towards the west. The manuscripts of Servius do not all present the same reading. The following are some of the principal variations: Cecos, CÆsar; CÆcos ac CÆsar; and CÆsar, Cesar. “A very large river kept the legions separated from their reserve and their baggage.” This very great river cannot be the Marne, which CÆsar does not even mention in the whole course of this campaign: it was evidently the Seine, which Labienus has crossed once only, at Melodunum (Melun); by crossing over to the right bank, he was separated from his base of operations, which was at Sens. On the contrary hypothesis, no river would have separated Labienus from his line of retreat; unless we admit, with Dulaure and several others, the identity of Agedincum with Provius, which is no longer possible. The Captain of the Staff Rouby has made investigations on the spot, which prove that from Sens the most ancient ways leading to Paris passed on the left bank of the Yonne and of the Seine. Moreover, the discoveries of M. CarrÉ have made us acquainted with the exact direction followed by the Roman road after quitting Sens towards Paris; it was entirely on the left bank of the Yonne. If CÆsar’s lieutenant had followed the right bank of the Yonne, he would, the day after his departure, have been arrested by the course of the Seine, and would have fallen in with the Gaulish town of Condate, built in the very angle of the two streams, in the midst of perhaps impassable marshes. If only a few thousand Gauls had occupied the heights which played so important a part in the campaign of 1814, Labienus, compelled to seek for a place to cross higher up the stream, would have been diverted considerably from his aim. It has been supposed wrongly that the BiÈvre was the marsh where Labienus, in his march on the left bank of the Seine, had been arrested by the Gaulish army. Leaving out of consideration the fact that the BiÈvre, which flows through a calcareous soil, can at no epoch have formed a marsh capable of arresting an army, how can we suppose that Labienus, if he had arrived at this stream, that is, close to Lutetia, would have retraced his steps as far back as Melun, to march from thence towards the oppidum of the Parisii by the right bank of the Seine, which would have obliged him to make a journey of twenty-four leagues? The manoeuvre of Labienus can only be explained by his desire to turn the strong position of Camulogenus, and arrive at Paris before him. The text of the “Commentaries” says clearly that Labienus, stopped by the marsh which shelves towards the Seine, stole away by night, surprised the passage of the Seine at Melun, and marched upon Lutetia, where he arrived before Camulogenus. To allow of the success of this manoeuvre, the marsh in question must necessarily not have been far from Melun. The Essonne alone fulfils that condition. The ground on the banks of this little river offers, even at present, by its nature, a very serious obstacle to an army. It is cut up by innumerable peat mosses; and it was behind this line of Essonne that, in 1814, the Emperor Napoleon I. established his army, whilst the enemy occupied Paris. The 6th legion, judging from its number, must have been one of the oldest, for Dio Cassius (XXXVIII. 47) informs us that the legions were designated according to their order of inscription on the rolls of the army; but, as it only appears for the first time in 702, it is probable that it had remained in garrison among the Allobroges or in Italy. A proof that this legion assisted in the siege of Alesia is found in the fact that, after the surrender of the place, it was sent to winter quarters on the SaÔne, where CÆsar found it a few months afterwards (De Bello Gallico, VIII. 4). The distribution of the troops in their winter quarters after the taking of Alesia confirms the number of legions given above. The re-distribution after the siege of Uxellodunum gives also the same result, for in book VII. c. 46 the “Commentaries” give the positions of ten legions, without reckoning the 15th, which, according to book VIII. c. 24, had been sent to Cisalpine Gaul. These facts are repeated again, book VIII. c. 54. The Gaulish army had there a position of great natural strength, for, to attack it, the enemy would have to climb high hills which were easy to defend; it was, moreover, protected by two watercourses: one, the Vingeanne, which covered its right; the other, the Badin, a small tributary of the Vingeanne, which protected its front. In the space comprised between these two watercourses and the road from Dijon to Langres, a ground extends, measuring five kilomÈtres in every direction, slightly broken in some parts, but almost flat everywhere else, particularly between the Vingeanne and the hillock of Montsaugeon. Near the road, and to the west, arise hills which command it, as well as the whole country as far as Badin and the Vingeanne. Two of these tumuli are situated near each other, between Prauthoy and Montsaugeon (see Plate 24, where the tumuli are marked). There is one near Dardenay, three to the west of Cusey, one at RiviÈres-les-Fosses, another at Chamberceau. We will not mention those which have been destroyed by agriculture, but which are still remembered by the inhabitants. Researches lately made in these tumuli have brought to light skeletons, many of which had bronze bracelets round the arms and legs, calcined bones of men and horses, thirty-six bracelets, several iron circles which were worn around the neck, iron rings, fibulÆ, fragments of metal plates, pieces of Celtic pottery, an iron sword, &c. It is a fact worthy of remark, that the objects found in the tumuli at RiviÈres-les-Fosses and Chamberceau bear so close a resemblance to those of the tumuli on the banks of the Vingeanne, that we might think they had come from the hand of the same workman. Hence there can be no doubt that all these tumuli refer to one and the same incident of war. (Several of these objects are deposited in the Museum of Saint-Germain.) We must add that the agricultural labourers of Montsaugeon, Isomes, and Cusey have found during many years, when they make trenches for drainage, horse-shoes buried a foot or two deep under the soil. In 1860, at the dredging of the Vingeanne, hundreds of horse-shoes, the inhabitants say, of excellent metal, were extracted from the gravel of the river, at a depth of two or three feet. They are generally small, and bear a groove all round, in which the heads of the nails were lodged. A great number of these horse-shoes have preserved their nails, which are flat, have a head in the form of a T, and still have their rivet—that is, the point which is folded back over the hoof—which proves that they are not shoes that have been lost, but shoes of dead horses, the foot of which has rotted away in the soil or in the gravel. Thirty-two of these horse-shoes have been collected. One of them is stamped in the middle of the curve with a mark, sometimes found on Celtic objects, and which has a certain analogy with the stamp on a plate of copper found in one of the tumuli of Montsaugeon. When we consider that the action between the Roman and Gaulish armies was merely a cavalry battle, in which were engaged from 20,000 to 25,000 horses, the facts just stated cannot but appear interesting, although they may possibly belong to a battle of a later date. The text says, also, that Vercingetorix gave orders that the baggage should be taken out of the camps in all haste, to follow him. If the baggage of an army of 100,000 men had accompanied Vercingetorix, on the road followed by the infantry, we cannot understand how the Roman army, which pursued the Gauls as long as daylight lasted, should not have captured it all. But investigations made in the country situated between the field of battle and the Alise, behind the heights of Sacquenay, have brought to light vestiges of a Roman road which, starting from Thil-ChÂtel, thirteen kilomÈtres behind Sacquenay, proceeded, by Avelanges, towards the hamlet of Palus, where it branched from the road from Langres to Alise. We may suppose, therefore, that Vercingetorix caused his baggage to follow in his rear as far as Thil-ChÂtel, where it took the road to Palus. The Roman road from Langres to Alise, which, without any doubt, marks the direction followed by the two armies, has been traced almost in its whole extent by Commandant Stoffel. Even at the present day, on the territories of Fraignot, Salives, Echalot, and Poiseul-la-Grange, the inhabitants call it the Road of the Romans, or CÆsar’s way. A study of the country fully confirms the interpretation we give to the expression altero die. In fact, to the north and east of Alise-Sainte-Reine (Alesia), to less than two days’ march, the ground is so cut up and broken that no cavalry battle would be possible upon it. It retains this character as far as fifty-five or sixty kilomÈtres from Alise, to the east of the road from Pranthoy to Dijon, where it becomes more easy and open. The battle-field of the Vingeanne, which we consider as the true one, is at a distance of sixty-five kilomÈtres from Alise. Supposing that, on the day of the victory, the Roman army had pursued the Gauls over a space of fifteen kilomÈtres, it would have had to traverse in the two following days, before arriving at Alesia, a distance of fifty kilomÈtres, that is to say, twenty-five kilomÈtres a day.
Among objects of defensive armour there have been found one iron helmet and seven cheek-pieces, the forms of which are analogous to those which we see represented on Roman sculptures; umbos of Roman and Gaulish shields; an iron belt of a legionary; and numerous collars, rings and fibulÆ. On this hypothesis, we should have the following numbers:—
Plutarch (Pompey, 53) says in so many words that there were seen every day at his door 120 fasces of proconsuls and prÆtors.
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