When we reflect on the magnitude of the pre-Christian Alexandrian libraries, as well as the magnificent appointments attaching to and lavish wealth expended upon the ancient University of the capital of the Ptolemies, we seem almost unable to realise the fact that people of education and intellect, until quite lately, believed that all this intellectual and literary magnificence had reached that pitch of excellence in the short space of less than four thousand years. In this period of time it was believed that man had so far risen in intellectual capacity from the absolutely ignorant condition of the first pair as described in Genesis as to have reached that state of mental perfection possessed by the professors in the Alexandrian, Athenian, and Sicilian schools. We can see Professor Euclid pointing out on the blackboard how, the sides of a rectilinear polygon all touching a circle, the area of the polygon is equal to the rectangle contained by the radius of the circle and the semi-perimeter of the polygon; Professor Archimedes would be explaining the theory that, if a force act upon a body, the measure of the force in absolute units is numerically equal to the time-rate of change of momentum and to the space-rate of change of kinetic energy; Professor Eratosthenes would be impressing upon his class the importance of the knowledge of the globular shape of the earth; and Professor Hipparchus would be startling his hearers by stating that he would show them how the failure of the sun to reach the same point in the same time in his annual circuit (according to the old geocentric theory) caused the vernal equinoxial sign to give place to the next zodiacal sign every 2,152 years.

Here was a galaxy of intellectual attainments indeed! With such a picture before our eyes we are calmly asked to believe that so little time as less than four thousand years had been sufficient for the building up of this vast intellectual edifice out of such rude materials as the man and woman of Eden, when the two thousand years following have been productive of so little advancement, notwithstanding the exquisite materials upon which to work that were left for us by the Alexandrian and Athenian sages. We cannot believe so evident an absurdity to-day; and yet it is little more than half a century since the whole of Christendom accepted without any doubt whatever the old traditional statement of the Church that man had only inhabited this earth for rather less than six thousand years.

How is it, then, that we have believed the traditionary story for so long and now reject it as absurd? People have believed the story of the creation according to Genesis partly because it was dangerous to do otherwise and partly because there was no absolute proof to the contrary. In 1774, however, a German of the name of Esper made a discovery which gave the finishing touch to the mortal wound inflicted upon the Christian and Jewish superstitions by the previous adoption of the Copernican system of astronomy; and, just as Copernicus, Bruno, Kepler, Galileo, Descartes, and Newton drove the first half-dozen nails into the coffin of the Bible, so did this discovery of Esper drive into it the first of the last half-dozen, the remaining five to be subsequently added by Darwin, Huxley, Lyell, Spencer, and Carpenter. The discovery made by J. F. Esper consisted of some human bones, mingled with remains of the Northern bear and other species then unknown, which were lying in the famous cavern of Gailenreuth, in Bavaria; and this was soon followed by the discovery, in 1797, by John Frere, at Hoxne, in Suffolk, of a number of flint weapons, mixed up with bones of extinct animals, the whole being embedded in rocks. These and other similar discoveries made some sensation among scientific men, which resulted in the publication, in 1823, of Dr. Buckland’s “ReliquiÆ DiluvianÆ,” in which the author summed up all the facts then known tending to the establishment of the truth that man co-existed with animals long since extinct. Immediately after this, in 1826, Tournal, of Narbonne, gave to the world an account of some discoveries he had made in a cave in Aude (France), where he had found bones of the bison and reindeer, cut and carved by the hand of man, together with remains of edible shell-fish, which must have been brought there by some one who dwelt there. A few years afterwards De Christol, of Montpellier, discovered human bones and fragments of pottery, mixed with the remains of the Northern bear, hyÆna, and rhinoceros, in the caverns of Pondres and Souvignargues. In 1833 Schmerling found in the caverns of Engis and Enghihoul, in Belgium, two human skulls, surrounded by teeth of the rhinoceros, elephant, bear, and hyÆna, on some of which were marks of human workmanship, and under which were flint knives and arrow-heads. Two years afterwards Joly, a Montpellier professor, found in the cave of Nabrigas (LozÈre) the skull of a cave-bear, having upon it marks made by an arrow, beside which were scattered fragments of pottery bearing the imprints of human fingers. Following upon these discoveries were those made in 1842 by Godwin Austen at Kent’s Cavern, near Torquay, consisting of animal remains and results of man’s handiwork; and those made in 1844, by Lund, in the caves of Brazil, consisting of skeletons of thirty human beings, an ape, various carnivora, rodents, pachyderms, sloths, etc. Kent’s Cavern, in 1847, was again the spot to which all eyes were turned; for there McEnery had found, under a layer of stalagmite, the remains of men and extinct animals. This remarkable discovery was followed, in the same year, by the appearance of a work by Boucher de Perthes, of Abbeville, in which he described the flint tools, etc., found in the excavations made there and in the Somme valley as far as Amiens. In 1857 the celebrated Neanderthal skull was discovered; and in 1858 Prestwich, Falconer, and Pengelly (Englishmen) found more flint implements in the lower strata of the Baumann cave, in the Hartz mountains, at the same time that Gosse fils obtained from the sand-pits of Grenelle various flint implements and bones of the mammoth; while in the following year Fontan discovered in the cave of Massat (AriÉge) utensils, human teeth, and bones of the cave-bear, hyÆna, and cave-lion. Near Bedford, about the same time, Wyatt found, in the gravel-beds, flints similar to those found at Abbeville, and bones of the mammoth, rhinoceros, hippopotamus, ox, horse, and deer; which discovery was soon followed by that of the celebrated human burial place at Aurignac, by Lartet, in 1860, in which were found human remains, together with bones of the bear, reindeer, bison, hyÆna, wolf, mammoth, and rhinoceros, a number of flint and horn implements, and the remaining ashes of fires. The world was at last induced to give some heed to the new cry of man’s extreme antiquity when Boucher de Perthes, of Abbeville, in 1863, discovered at Moulin-Quignon, at a depth of fifteen feet, in a virgin argilo-ferruginous bed belonging to the later Pleiocene or early Pleistocene period, the half of a human lower jaw-bone (which had belonged to an aged person of small stature), covered with an earthy crust, by the side of which lay a flint hatchet, covered with the same kind of crust; and not far from which were also buried, in the same bed, two mammoths’ teeth. After this discovery scientific men generally subscribed to the new theory of the antiquity of man, and all seemed eager to pursue their investigations without delay, the result being that we are now receiving, almost day by day, fresh evidence on the subject, and hope soon to arrive at a tolerably accurate conclusion as to the earliest date of man’s appearance upon earth.

Let us now look more closely at the discoveries made in the various caves referred to above, and also see what advances had been made by geologists in other directions during the same period, as well as what amount of progress has been made during the last twenty years. Dr. Schmerling, the Belgian geologist and comparative anatomist, after exploring the Engis and other caves in the province of LiÈge, published an illustrated work, giving the results of his investigations, which were highly interesting, and contributed largely to the establishment of the theory of man’s antiquity. In these caves Schmerling found the bones of the cave-bear, hyÆna, elephant, and rhinoceros, together with human bones, none of which gave any evidence of having been gnawed, from which circumstance it was inferred that these caves had not been the dwelling-places of wild beasts; and the fact that the bones were scattered about without any order having been observed in their distribution pointed to the conclusion that the caves had not been used as burying-places. Probably, therefore, these remains had been washed into the caves from time to time, and had gradually become covered with deposit, and thus protected and preserved. There were no complete skeletons found; but in the Engis cave were discovered the remains of at least three human beings, the skull of one being embedded by the side of a mammoth’s tooth, and in such a state of disintegration that it fell to pieces on being moved; while the skull of another, an adult, was buried, five feet deep, by the side of a tooth of a rhinoceros, several bones of a horse, and some reindeer bones. Besides the bones, there were also discovered some rude flint implements, a polished bone needle, and other products of man’s industry, all embedded in the same layer as the bones. It follows from these facts that man lived on the banks of the Meuse at the same time as the rhinoceros, mammoth, hyÆna, and cave-bear, extinct animals of the Pleiocene and early Pleistocene era.

Not far from these caves are those of the Lesse Valley, in which Dupont discovered, in 1864, three different layers of human and other remains, the lowest of which contained the bones of the mammoth, rhinoceros, and other extinct animals, together with flint instruments of the rudest type, instruments of reindeer horn, and a human lower jaw with a marked resemblance to the lower jaw of the higher apes. Another discovery at some little distance away from these caves was made in 1857 in what is called the Neanderthal Cave, in the valley of the DÜssel, between DÜsseldorf and Elberfeld, which is important, not so much as an indication of the length of time that man has lived on the earth, as of the close resemblance existing between the skulls of human beings in the early Pleistocene era and the skulls of apes. The discovery consisted of a human skull and a number of human bones, together with the bones of the rhinoceros, which latter were subsequently unearthed. The skull was of such a character as to raise the question of whether it was human or not, the forehead being narrow and very low and the projection of the supra-orbital ridges enormously great. The long bones of the skeleton agreed with those of men of the present day in respect to length, but were of extraordinary thickness, and the ridges for the attachment of muscles were developed in an unusual degree, showing that the individual was possessed of great muscular strength, especially in the thoracic neighbourhood. Drs. Schaafhausen and Fuhlrott pointed out that the depression of the forehead was not due to any artificial pressure, as the whole skull was symmetrical, and that the individual must have been distinguished by an extraordinarily small cerebral development as well as uncommon corporeal strength. Professor Huxley considers this Neanderthal skull to be the most ape-like one he ever beheld, and Busk, a great authority, gives valuable reasons for supposing it to be the skull of an individual occupying a position midway between the man and the gorilla or chimpanzee. Huxley has carefully compared the Engis and Neanderthal skulls, and his remarks upon them are given in their entirety in Lyell’s “Antiquity of Man.” From these remarks we gather that the Engis skull was dolichocephalic in form, extreme length 7.7 inches, extreme breadth not more than 5.25 inches, forehead well arched, superciliary prominences well but not abnormally developed, horizontal circumference 20½ inches, longitudinal arc from nasal spine to occipital protuberance 13¾ inches, transverse arc from one auditory foramen to the other, across the middle of the sagittal suture, 13 inches. The Neanderthal skull is so different from the Engis skull that Huxley says “it [Neanderthal] might well be supposed to belong to a distinct race of mankind.” It is 8 inches in extreme length, 5.75 inches in breadth, and only 3.4 inches from the glabello-occipital line to the vertex; the longitudinal arc is 12 inches, and the transverse arc probably about 10¼ inches, but, owing to incompleteness of temporal bones, this could not be correctly ascertained; the horizontal circumference is 23 inches, which high figure is due to the vast development of the superciliary ridges; and the sagittal suture, notwithstanding the great length of the skull, only 4½ inches. Huxley sums up his examination of the Neanderthal skull in these words: “There can be no doubt that, as Professor Schaafhausen and Mr. Busk have stated, this skull is the most brutal of all known human skulls, resembling those of the apes, not only in the prodigious development of the superciliary prominences and the forward extension of the orbits, but still more in the depressed form of the brain-case, in the straightness of the squamosal suture, and in the complete retreat of the occiput forward and upward from the superior occipital ridges;” and he then proceeds to clearly show that the skull could not have belonged to an idiot. On the whole, the Engis skull more clearly approaches the Caucasian type, while the Neanderthal differs entirely from all known human skulls, being more nearly allied to the chimpanzee than to the human. Both these skulls belonged to individuals who lived in the early Pleistocene era, the Engis being probably the older of the two, and yet the Engis is the most like the modern European skull, which tells us plainly that in those remote times there were existing in Belgium and the surrounding districts two different races of men, one highly advanced in brain evolution and the other in a wretchedly low condition of intellectual development. The Neanderthal skull probably formed part of an individual belonging to the tail-end of a semi-human race, while the Engis skull, in all probability, belonged to an oriental immigrant belonging to a more advanced race. It must be always remembered that scientific men have long since admitted the truth of the theory that the differences in character between the brain of the highest races of men and that of the lowest, though less in degree, are of the same order as those which separate the human from the ape brain, the same rule holding good in regard to the shape of the skull.

The discoveries made in Kent’s Cavern, in the year 1842 and again in 1847, led to a thorough investigation of the series of galleries forming the now celebrated Brixham Caves, near Torquay, and as early as 1859 the labours of the explorers were rewarded by the discovery of a number of flint implements in the cave-earth or loam, underneath the layer of stalagmite, which were the work of men living in PalÆolithic times, prior to the existence of the reindeer, whose antlers were found deposited in the layer of stalagmite. Previous to this time, when McEnery, in 1826, examined Kent’s Cavern, he had stated that he had found several teeth of Ursus cultridens, a huge carnivore belonging to Tertiary formations, but now extinct; and as this monster was first known in Meiocene deposits in France, but had never been traced in any cavern or fluviatile Pleistocene deposits, although it had occurred in Pleiocene formations, considerable excitement was caused on the score that the flint implements lately found might possibly have belonged to Meiocene, or at latest early Pleiocene men. Further investigations were accordingly commenced for the purpose of solving this problem, the explorations being under the superintendence of Messrs. Vivian and Pengelley; and in 1872 they at last came upon a fine incisor of Ursus cultridens in the uppermost part of the cave-earth, which settled the point as to man’s existence at the same time with the extinct bear in England. The Kent’s Cavern deposits are as follows:—1. Limestone. 2. Black mould, containing articles of mediÆval, Romano-British, and pre-Roman date. 3. Stalagmite floor, from 16 to 20 inches thick, containing a human jaw and remains of extinct animals. 4. Black earth, containing charcoal and other evidence of fire, and also bone and flint instruments. 5. Red cave-earth, containing PalÆolithic implements and bones and teeth of extinct animals, such as cave-lion, mammoth, rhinoceros, and hyÆna, and including the tooth of the Ursus cultridens, or Machairodus latidens. 6. Second stalagmite floor, from 3 to 12 feet thick, covering bones of bears only. 7. Dark red sandy loam, containing bones of bears, three flint implements, and one flint chip. The fact of the Ursus cultridens being contemporary in England with man is of enormous interest to geologists and anthropologists, for it places the date of PalÆolithic man as far back as the Pleiocene age, instead of, as heretofore, in the Pleistocene.

The caves of the Dordogne Valley in south-western France have supplied us with some very good relics of a very remote period. They are situated in rocks of Cretaceous age, and form shelters in which ancient huntsmen used to find dwelling-places, leaving behind them refuse-heaps and instruments of various kinds. In the VezÈre Caves, which are included in the Dordogne series, there is one of very ancient date, Le Moustier, in which is a bed of sand having both above and below floors of a similar character, containing charcoal, flint instruments, and other remains. The depth of this sandy bed is about 10 inches, having the appearance of a river deposit; and, although many flint instruments have been found in it of a more ancient date than those unearthed in the other caves, yet no worked bone instruments have been discovered. In another cave, the Langerie, bronze and polished stone objects have been found, together with various kinds of pottery, below which, and under masses of fallen rock, covered with PalÆolithic flints and sculptured bones and antlers of reindeer, a human skeleton was discovered lying under a block of stone. In another cave, La Madeleine, was found a mammoth tusk, on which was rudely carved a picture of the animal itself, proving incontestably that cave-men lived here in mammoth times. In the Mentone cave Dr. RiviÈre, in 1872, suddenly came upon the bones of a human foot, which caused him to make a very careful examination of the deposit, the result being that he unearthed an entire human skeleton at a depth of 20 feet, surrounded by a large number of unpolished flint flakes and scrapers, and a fragment of a skewer, about six inches long. No metal, pottery, or polished flint was found; but bones of extinct mammals were scattered about, thus suggesting a remote PalÆolithic antiquity. The skeleton is 5 feet 9 inches high, the skull dolichocephalic, forehead narrow, temple flattened, and facial angle measuring 80 to 85 degrees; the teeth were worn flat by eating hard food, and the long bones are strong and flattened.

No human bones have as yet been discovered in the deposit of the Somme valley, where so many PalÆolithic flints have been found; but in the valley of the Seine, at Clichy, Messrs. Bertrand and Reboux found, in 1868, portions of human skeletons in the same beds where PalÆolithic implements had been embedded. These bones were found at a depth of seventeen feet, and included a female skull of very inferior type, having enormously thick frontal bone and a low, narrow roof, slanting from before backwards. A very good specimen of human fossil is that known as the “Denise Fossil Man,” comprising the remains of more than one skeleton found in a volcanic breccia near Le Puy-en-Velay, in Central France. These bones have been very carefully examined by the members of the French Scientific Congress, as also the deposit in which they were found, and the opinion arrived at is that the fossils are genuine and their age early Pleistocene. Another most interesting specimen of ancient human remains is the skeleton found buried under four Cypress forests, superimposed one upon the other, in the delta of the Mississippi, near New Orleans, at a depth of sixteen feet. Dr. Dowler ascribes to this skeleton an antiquity of at least 50,000 years, reckoning by the minimum length of time that must have elapsed during the formation of the deposits found and the sinking of the four successive forest beds. In another part of the same delta, near Natchez, a human bone, os innominatum, accompanied by bones of the mastodon and megalonyx, was washed out of what is believed to be a still more ancient alluvial deposit. Dr. Dickeson, in whose possession the said bone is now, states that it was buried at a depth of thirty feet, and geologists agree that its date is very early, some maintaining that it is probably of a higher antiquity than any yet discovered.

From these discoveries it is abundantly evident that man existed on the earth contemporaneously with the mastodon and other extinct mammals belonging to the Pleiocene and early Pleistocene eras. There are, however, people who stoutly deny that this can be so—at any rate, as regards Northern and Central Europe—and who rank the discoveries at Moulin Quignon, Engis, Kent’s Cavern, etc., with late Pleistocene remains. They maintain that the beds in which these relics were found could not have been of Pleiocene or early Pleistocene formation, inasmuch as they lie above the till and boulder-clay which form the glacial deposits of the time when Europe was an Arctic region—that is to say, of late Pleistocene times. Therefore, they say, man’s earliest existence in Europe was post-glacial or late Pleistocene. But while the fact of the human remains having been discovered above the boulder-clay appears to point to a post-glacial date, still there is confronting us the perplexing anomaly of the contemporary existence of extinct mammals belonging to a tropical fauna, which, if we accept this theory, involves the necessity of admitting that a tropical climate followed the last glacial epoch—a condition of things that we know never existed at all. The fact is there have been more periods of glaciation than one, each being followed by the deposition of boulder-clays; and between the periods of intense Arctic cold there were intervals of tropical or sub-tropical heat, when mammals belonging to and requiring a tropical climate ventured as far north as the north of England, to become extinct when the period of glaciation supervened. The last glacial period, we know, extended its area of influence as far as the high peaks of Switzerland and Northern Italy, completely overwhelming the whole of Northern Europe as far south as the latitude of 45°, and the whole of North America as far south as the latitude of 40°; since when there has been a gradual diminution of cold until the present temperate climate supervened. Now, if it can be positively ascertained that all the boulder-clays found in England and Northern Europe were deposited during and immediately after this last glacial period, the date of man’s first appearance in those districts, as far as we have as yet any evidence, must be post-glacial; but in such a case it would have been impossible that a tropical fauna and flora could have existed in the same localities, whereas their remains have been abundantly found lying side by side with the remains of PalÆolithic man. The conclusion we must draw is that the boulder-clays found below the remains of PalÆolithic man could not have been deposited after the last period of glaciation, but must have followed some prior glacial condition, and that man existed in England and Northern Europe contemporaneously with extinct mammalia during inter-glacial or pre-glacial times, when the climate of England was tropical or sub-tropical—that is to say, in middle Pleistocene or late Pleiocene times. If man really existed in England in Pleiocene times, in favour of which view there appears to be strong evidence, he would have been in all probability the companion of the extinct tropical mammalia found deposited in the Cromer Forest beds, and some of which belonged to Meiocene times. This forest was in existence at the close of the Pleiocene era, and stretched from Cromer far away into what is now the German Ocean, uniting Norfolk and Suffolk to Holland and Belgium; but soon after the commencement of the Pleistocene period the North Sea gradually swept over the old continent between Britain on the west and Sweden, Denmark, and the Netherlands on the east, thus converting the old forest at Cromer into the bed of the ocean, where the stumps of the trees may now be seen embedded in deposit at very low tide. Immediately after the disappearance of this forest the first period of glaciation commenced, from which moment until the close of the glacial periods the alternations in temperature and surface level were frequent and of enormous magnitude, the correct sequence of which changes we have as yet no proper conception.

If we go back to the commencement of the Tertiary great division of the geological periods, we shall find that, at the beginning of the Eocene deposits, the Secondary cretaceous rocks had been upheaved from the bottom of the sea, and had become the dry ground of a large continent, of which the British Islands formed a part; so that Eocene fauna and flora in England had free communication with continental life. The relative positions of land and water during this first Tertiary period were as follows: The great continent spread from North America to Europe, uniting Canada, Greenland, Iceland, Faroes, Shetlands, Orkneys, Ireland, and Britain (except south-east portion), with Scandinavia and Spitzbergen on the north-east, and with France (Brittany) and Spain on the south. There were three seas—the North Sea, which, like a wedge with its point downwards, separated Greenland, Iceland, and Faroes from Spitzbergen and Scandinavia; the South-Eastern Sea, which stretched from the top of Denmark to Boston in Lincolnshire, thence to Lyme Regis in Dorsetshire, and on to Cherbourg, covering the whole of the east and south-east of England; and the Atlantic, which was separated from the North Sea by Iceland, Faroes, and intermediate lands, and from the South-Eastern Sea by the British Islands, Western France, and intermediate lands. These Eocene seas teemed with fish now only found in more Southern latitudes; while the inland lakes and rivers abounded with reptilian life. On the land tropical flora and fauna flourished, among the former being palms, cypresses, and giant cacti, and among the latter, in Lower Eocene times, large numbers of marsupial species, in the Middle Eocene also lion-like carnivora, and in Upper Eocene tapir-like animals, herds of Anchitheres (ancestors of the horse), HyÆnodon (ancestors of hyÆna), and Lemurs. The Miocene period opened with a lower temperature than that of the Eocene, and with a considerable difference of surface level in Denmark and on the South of England, the land having been upheaved to such an extent as to leave no part of the country under water, uniting Yorkshire with Denmark, and dividing the South-Eastern Sea into two portions, the Northern one stretching from Schleswig as far as a few miles from the present Lincolnshire coast and then back to the present mouth of the Scheldt; and the latter stretching from Boulogne-sur-Mer to Hastings and Portland Bill, and back to Cherbourg. Otherwise the relationship between land and water was much the same as in Eocene times. The climate of the Meiocene period was sub-tropical, and in the lower strata were found placental mammals, but few marsupials; in the middle beds remains of the mastodon, rhinoceros, anthropomorphous apes, sloths, and ant-eaters; and in the upper layers antelopes and gazelles; but no mammalian species in any Meiocene deposit has continued to present times, all having become extinct. When we arrive at the Pleiocene age we have quite a different state of things; the Atlantic and North Seas gradually united together, thus separating Europe from Faroes, Iceland, Greenland, and North America; and on the east of Britain the North Sea slowly descended as far as the present mouth of the Thames, thus separating Britain from Norway, Denmark, and the Netherlands; while the two Southern seas disappeared altogether, leaving a huge continent, the borders of which stretched from the present west coast of Norway to Denmark, the Netherlands, across to Essex, central Norfolk (east Norfolk and Suffolk being part of North Sea), and up to the Shetlands, at which point a turn was made south to a few miles west of present west coast of Ireland, and thence southward to a few miles west of present coast of Brittany, in France, thus leaving the British Isles, France, and the rest of Europe as one large continent. To accomplish these enormous changes, a very long time was required, during which the climate was gradually becoming more temperate, being in older Pleiocene times sub-tropical and in newer Pleiocene warm-temperate; while the fauna and flora gradually became less tropical in kind. The older Pleiocene deposits are divided into coralline crag and reg crag, while the newer Pleiocene consist of Norwich crags and Weybourne sands, on a level with which latter was the Cromer forest, submerged by the North Sea during the earlier Pleistocene period.

At this point commence those enormous alterations in the surface level and climate of this part of the world which produced such extraordinary results, and during which man made his first appearance in Britain. At the very commencement of the Pleistocene era the temperature in Britain was lowered to such an extent as to produce a sudden disappearance of the semi-tropical fauna and flora: the land had reached the high elevation of 500 feet above the present level, joining Scotland and Scandinavia, and there had appeared in the North Sea large blocks of ice, which rapidly increased in size and quantity, and continually pushed farther south, until at length, after a long lapse of time, the whole of Northern Europe, Asia, and America as far as the latitude of about 45° became like a huge ice-house, the Arctic cold driving all life before it to a more southern latitude, those forms which had lived in Britain during Meiocene and Pleiocene times being the first to disappear on the earliest sign of the approaching cold, and the Arctic flora and fauna which took their place being afterwards compelled also to move southward, owing to the intense severity of the glaciation.

When this state of things had lasted a very considerable time the climate became milder, the melting ice deposited its boulder-clay, and the high continent commenced to sink again to its former level, during which gradual submergence the climate became still warmer, until it at length reached a more than temperate mildness, at one time being almost tropical. Still the land continued to sink, and this submergence lasted until the British part of the great continent had become a large archipelago of small islands, the surface of the land being upwards of one thousand feet below the present level. It has been calculated that such a submergence would require at the least 88,000 years to be completed; so that a general idea may be formed of the enormous periods of time occupied by these glacial and inter-glacial epochs. While the British archipelago existed, another change of climate took place, resulting in another glacial period, but probably not of such intensity as the previous one. At this period the upper boulder clay was deposited in the sea, to be afterwards upheaved above the sea level in Yorkshire and other places. After a long continuance of this glaciation the land commenced to rise again and the climate to improve, until, after a period of about 136,000 years (according to careful computation), there was produced another continental condition, the ground reaching about 600 feet higher than now, and the climate becoming temperate once more. England, Ireland, Scotland, Scandinavia, Denmark, the Netherlands, France, and Spain once again formed a mighty continent, the climate of which was cold-temperate, becoming milder year by year, and the elevation of which was gradually declining, as it has continued to do until the present time, the British islands slowly becoming once more separated from the continent of Europe. During the last temperate continental condition PalÆolithic and Neolithic man lived in Britain, as is clearly proved by the evidence brought forward by various authors in support of the contention; but, as we have seen, PalÆolithic man’s remains discovered in the various deposits were often in the company of the bones of extinct mammals belonging to a tropical fauna, which species could not have existed in Britain with such a climate as that which followed the last period of glaciation, but must have lived either in pre-glacial times, or, in other words, at the end of Pleiocene or very beginning of Pleistocene times, or else in inter-glacial or mid-Pleistocene times; and whichever alternative be adopted we are bound to fix the date of the PalÆolithic remains at the same period. To fix their date in the very earliest of Pleistocene, or latest of Pleiocene times, would give them an antiquity of nearly 300,000 years; to fix it in mid-Pleistocene times, during the temperate or inter-glacial period of submergence, would give them an antiquity of upwards of 170,000 years; and to fix it in post-glacial times would give them an antiquity of probably 70,000 or 80,000 years at most. The inter-glacial theory would, on the whole, appear most likely to be the correct one, were it not for the fact that, during the inter-glacial period, this country was partially submerged, which would probably have prevented any communication in those times between the islands and the mainland. We must, however, not forget that the great submergence commenced during the first period of glaciation, and did not cease until the second period had been reached, so that the inter-glacial period of warmth would take place when England and Scotland were but little different from now in their relationship to the continent, and long before the archipelago was formed. Whether it would have been possible under these conditions for PalÆolithic man to cross from the continent to the British islands we cannot say; but the probability is that the distance to travel by water would have been far too great in such early times; in which case we have no alternative but to place the date of man’s earliest existence in England at the latest Pleiocene age, as indeed we are compelled to do by the fact that PalÆolithic implements have been found in Kent’s cavern side by side with teeth of the extinct bear of that period, as well as by the discoveries made in the Engis and other caves.

In Southern Europe and the Southern States of North America the glacial epoch had little effect, so that man’s age upon the earth in those districts will be better calculated than it can ever be here or in France and Belgium; and it will not be surprising if we learn before long that man lived in the districts surrounding the Mediterranean Sea in early Pleiocene times. This sea, it must be recollected, was almost dried up during the early and middle Pleistocene periods, and there was no communication between it and the Atlantic Ocean, so that Europe was connected both on the east and west with Africa, and was also one continuous continent with Asia, there being then no Black Sea and no Caspian Sea. The probability, therefore, is that man first became a rational being, parting with his ape-like characteristics, somewhere in Southern Asia or Northern Africa, or, more probably still, in the now submerged continent of Lemuria, which once joined China, India, and Africa in one continental system; after which he emigrated in different directions, finding his way north-westwards over the European continent as far as the very limit of the Franco-British continental system. At what period man first existed in the districts around the Mexican Gulf it is at present impossible to say; but the skull found in the Mississippi beds is calculated to be at least 50,000 years old, and by some the date is fixed at 100,000 years, which would carry us back to middle Pleistocene times at least. Man, therefore, most probably existed in Europe long before he had made his appearance in the new world, although it is quite possible that further investigation may lead to the discovery of a still more ancient stock than that to which the Mississippi skull belonged. How long a time elapsed between the first appearance of PalÆolithic man in Northern Europe, and the subsequent advent of Neolithic man, it is at present impossible to say with any degree of certainty; but the interval must have been of enormous length, for we find no traces of polished stone implements until the very close of the Pleistocene era during the last Franco-British continental system. At this period man had become much more civilised than his ancestors of the PalÆolithic age; his implements were more ornamental and better fitted for the purposes for which they were intended; his mode of life had become more settled; and he had developed primitive industries. In the ancient “hut circles” found at Standlake and at Fisherton, near Salisbury, have been found instruments used for spinning and weaving, which date back to Neolithic times, also fragments of pottery and stones used for grinding corn, side by side with the remains of domestic animals. From this we conclude that Neolithic man was at this time a companion of domestic animals, a keeper of flocks and herds, and an agriculturalist. He very soon became, in addition to this, a miner, as is evident from the remains found at Cissbury, on the South Downs, and at Grimes Graves, near Bandon, in Suffolk. Shafts had been sunk and galleries dug out of the ground in order to unearth a better kind of flint for manufacturing useful implements; and in some of these galleries the tools of the workmen have been discovered, consisting of picks made out of stags’ antlers, polished stone celts, chisels of bone and antler, and small cups made of chalk. With these and other primitive tools the flint had been worked out in several places, forming deep hollows in and near which were the remains of birds, sheep, goats, horses, pigs, and dogs, which evidently had served as companions to and food for the miners. Canoes, hollowed out of large trees by the use of fire and axes, have also been discovered, together with huge paddles for propelling them; and numerous have been the discoveries of heads of javelins, arrows, and spears, which were probably used as weapons of warfare, the population by this time having grown large and divided itself into small communities more or less at enmity with each other.

Similar progress was made by Neolithic man on the continent of Europe, as we know from the discoveries made in Switzerland. As early as 1829 very ancient piles had been discovered in the lake of ZÜrich, which have since been found to be the remains of primitive lake-dwellings, dating from Neolithic times. These peculiar habitations consisted of wooden houses built on platforms erected on a number of wooden piles driven into the bottom of the lake, and were, no doubt, so constructed with the view of protecting the small colony from the raids of wild beasts and warlike people from other parts of the country. Most of these lake-dwellings were burnt down, their charred remains sinking to the bottom of the lake, where they have been discovered together with heaps of corn, pieces of woven and plaited cloth, mealing or grinding stones, earthenware implements, nets and mats, and implements of stone, antler, and bone. Numbers of domestic and other animals were kept in these dwellings, such as the dog, horse, pig, sheep, and cow; and fish appears to have been a regular article of consumption. Similar discoveries have been made in Denmark by Professor Steenstrup and others, which show an equal advance in civilisation and culture during early Neolithic times. Vast accumulations of refuse matter, in the form of oyster-shells, fish-bones, and animal remains, have been found near the shores of the Baltic, the whole being heaped up into mounds, evidently having formed public refuse-heaps for communities of settlers. Scattered about were also found polished stone axes, but no metal implements; while upon some of the stones were well-drawn engravings, pointing to a considerable advance in culture; and the fact that the remains of the domestic animals prove them to be of southern and eastern origin suggests the probability that these settlers were immigrants from the south-east of Europe, where we should expect considerable advance to have been effected in civilisation.

It is extremely probable and generally admitted that man became civilised in oriental countries, and made his way northwards and westwards, gradually covering the whole of Europe; so that we should expect the races of Egypt, Persia, and India to be far more highly cultured than those who were establishing themselves in the west at the same time. It would take a very long time indeed for people to spread themselves from Egypt and Persia over the whole of Europe, and during all this time they would naturally, owing to their wandering habits, advance in civilisation far more slowly than those who remained in their original homes. At the time, therefore, that Neolithic man had become a settler in Europe and Britain we may fairly suppose that Egypt, Persia, and India were great, powerful, and prosperous states, well advanced in civilisation and art, and, perhaps, even the tail-end of a mighty and prosperous civilisation that had preceded them long ages before. It was probably from these highly-civilised centres that the discovery of bronze was carried into Europe, which marked the commencement of what is called the Bronze or Prehistoric Age, during which period the use of bronze implements almost entirely superseded that of polished stone weapons.

Before the Bronze Age had fairly commenced the last of the Pleistocene deposits had taken place, and the recent layers of earth had begun to distribute themselves upon the older strata; but how long a time has actually elapsed since the completion of the Pleistocene stratification has not been accurately ascertained. A rough approximation to the relative length of the Pleistocene and Prehistoric periods may be obtained from the fact that the valleys were cut down by streams flowing through them as much as a hundred feet deep in the former period, while the work done by the rivers during the latter period is measured by the insignificant fluviatile deposits close to the adjacent streams. We may, therefore, conclude that the Pleistocene era was, beyond all calculation, of longer duration than the Prehistoric. It must not be imagined from this that the Prehistoric period was a short one, for there have been a series of changes in the fauna, and a series of invasions of different races of men into Europe, which must have required a very long time to have been brought about, judging from similar changes recorded in history.

It is believed that, soon after the commencement of the Bronze Age, an Aryan stream of life poured over Europe from Central Asia, and finally invaded England, driving out the old inhabitants and re-stocking the country with a host of Aryan Celts, who brought with them the knowledge of bronze manufacture. The defeated natives retreated to Ireland and the west of England and Scotland, and finally gave themselves up to their conquerors, whom they in future served as slaves. Thus were annihilated the Neolithic men of Britain, and thus was the use of polished stone weapons superseded by that of bronze implements. These Celtic invaders, like their conquered predecessors, lived upon the flesh both of wild and domestic animals, as is evident from the discovery made in 1867 at Barton Mere, near Bury St. Edmunds, where bronze spear-heads were found in and around large piles and blocks of stone, together with vast quantities of the broken bones of the stag, roe, wild boar, hare, urus, horse, ox, hog, and dog, as well as fragments of pottery. Fire was produced by these men by striking a flint flake against a piece of iron pyrites, as is evident from the discovery of these articles in and around charred remains of fires; thus a great advance was made in this direction upon the habits of the older inhabitants, who had only been able to procure fire by rapidly turning a piece of wood between their two hands, the point being fixed in a hollow on another piece of wood, so that the great friction which resulted produced heat sufficient to generate flame.

Following the Bronze Age was the Iron Age, during which period the historic era commenced; and thus we have not only various discoveries to prove that iron gradually supplanted bronze, but history bears witness to the same truth. The Homeric legends abound with feats performed by heroes who wielded bronze and iron weapons; and from Hesiod, who wrote nearly five hundred years before Herodotus, we learn that iron had already superseded bronze among the Greeks, and that the archÆologists of his day recognised a distinct era of the past as the Age of Bronze. The probability is that the discovery of the mode of separating iron from its ore and turning it into useful articles was made in Asia, from whence it was afterwards introduced into Europe; for we find that at the very first appearance of iron in Britain and France there were iron coins and iron ornaments in regular use among the people, which articles were no doubt brought by invading tribes of oriental people. In the early or prehistoric portion of the Iron Age the practice of burying the dead at full length first became known in Britain, cremation having always been practised previously.

Having now arrived at historic times, our inquiry into man’s antiquity need not be further continued. For the searcher after truth there only now remains the task of carefully considering the facts here brought forward and comparing the conclusions arrived at with the old orthodox story of the creation of the world and man as found in the Bible. If the story read in the Book of Nature be a true one, then man has lived upon the earth several hundred thousand years, and has passed from a state of unconscious animal existence, through innumerable stages of savage, semi-savage, and civilised conditions, to his present commanding position. If the story read in the so-called Book of God be a true one, then the world and man were created less than six thousand years ago. The reader must judge for himself which is the truth.

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PLAN OF EVOLUTION OF
MIND IN MAN

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