From a technical point of view the history of glass might be divided into three periods—periods, it is true, of very unequal length and relative importance. The first of these, one more especially of archÆological interest, would include all the glass made before the discovery of the process of forming a vesicle by blowing through a hollow tube. Nearly all the glass that finds its way into our collections would be classed in the second period; this would extend from the beginning of our era to the end of the eighteenth century. In the course of these long centuries, the work of the glass-maker has of course been influenced by the varying schools and fashions of different ages and countries, but technically there is no great advance to be noted in the work of the seventeenth and eighteenth centuries when compared with that of the early days of the Roman Empire; and this is still more true if we consider merely the materials employed, their preparation, and the methods of their fusion. But before the end of the eighteenth century a great change had set in. The manufacture of glass in England and France had become an important industry, and we enter upon the third or industrial period. With the general advance in mechanical processes that is so characteristic of the time, the old methods of the working of glass were swept aside, so that before the middle of the last century, whatever of interest was to be found in the manufacture and Now, as I have said, the characteristic and dominant quality of glass is to be found in its capability of being blown into vessels of varying shape when in a viscous and semi-fluid state. All glass then, made at a time when advantage had not yet been taken of that essential property of the material, we may class together in a primitive group. This line of demarcation is as important, to return to a comparison I have already made, as that between hand-moulded pottery and that thrown on the potter’s wheel. The objects made in the earlier period by primitive processes were mostly small, and their merit depended chiefly upon the brilliancy and the skilful juxtaposition of a few simple colours—they may for the most part be classed as verroterie. It has long been acknowledged that it is from Egypt that our earliest specimens of glass have come. But until quite recently the greatest misconceptions have prevailed as to the age and the methods of preparation of Egyptian glass. Misled by an erroneous interpretation of what are probably representations of metallurgical processes, on the walls of Twelfth Dynasty tombs at Beni Hassan and elsewhere, it was inferred that the art of blowing glass was known to the Egyptians at least as long ago as the days of the Middle Empire; by others the art was carried back to a still earlier period. We now have almost full assurance that glass in a true sense was practically unknown to the Egyptians before the time of the Eighteenth Dynasty (say between 1600 and 1500 B.C.), Glass, indeed, in these early days, whether in Egypt or in the Greek world of the MycenÆan age, was something very different from what we now understand by the term. We must ‘think away’ a great deal of the modern connotation of the word. We must, above all, think of the material in connection with the native precious or semi-precious stones that it more or less resembled, and which were used along with it for decorative purposes. We do not know the Egyptian name for glass, but probably, like the Greeks, they divided all the hard stony bodies used in the arts into such as were ‘dug up’—natural products, that is, which they found ready at hand—and such as had been artificially prepared, and above all previously melted (the ????? ????????? on the one hand, and the ????? ??t? on the other). If, as I have said, there is little evidence for the existence of glass in Egypt before the Eighteenth Dynasty, it is quite otherwise with regard to a very similar substance, identical almost in chemical composition—one whose history can be traced much further back. On beads of clear rock crystal, dating from the First Dynasty, and it would seem from an even earlier period in some cases, we find a coating of turquoise blue transparent glaze The Egyptians soon learned to apply this blue glaze—essentially a silicate of soda and copper—to the surface of other natural stones, and above all to a fritty porous earthenware, the so-called Egyptian porcelain. Such an alkaline glaze, indeed, will only adhere to a porous base of this kind, with which it becomes united on firing, by a chemical reaction, or at least by the solution in it of some of the silicates of alumina and lime in the clay. This glaze differs essentially from those used on true porcelain—these last are almost of the same composition as the ground they cover—but, as in the case of the glazes on porcelain, so the materials of the Egyptian glazes were probably first incorporated together in a partially fused frit which was then ground and mixed with water to form a soup-like ‘slip,’ into which the object to be glazed was dipped. There have been brought from Egypt a few rare objects carved out of a blue frit (probably similar to that used in the preparation of glazes), for which a very early date has been claimed. But such a frit is no true glass. The Egyptians had from the earliest periods been adepts in the carving of native minerals and rocks, and evidently found great pleasure in the strange markings and contrasts of colour found on their polished surfaces. Already in pre-dynastic times they availed themselves of their native granites, porphyries and conglomerates; from these materials they manufactured those large, carefully turned vases of which so many have lately been brought from Egypt. For smaller objects—jewellery, beads, and inlay of various descriptions—they had command of a wide scale of colours—reds and tawny yellows from jasper, purple from the amethyst, greens from root of emerald and from a special kind of felspar, and blue It is not too much to say that the little we know of the processes of these early Egyptian glass-makers is derived from notices on the subject scattered through the memoirs in which Dr. Flinders Petrie has described the results of his excavations, more especially from the report issued in 1894, on his discoveries at Tell-el-Amarna. In the introduction to the catalogue of the Egyptian Exhibition held at the Burlington Fine Arts Club in 1895, Dr. Petrie has summed up our knowledge on this subject. I will quote the description of the method by which, according to him, these alabastra were made. 2 1 3 ‘A metal rod of the size of the intended interior of the neck, and rather conical, was coated at the end with a ball of sand held together by cloth and string. This was The wavy decoration thus obtained was of two types: (i) formed simply by a succession of crescent-shape curves, or (ii) by means of a double drag, the pattern assumed a form like a frond of palm leaves, or still more like these leaves plaited into a basket. (Cf. Pl. II.) The number of these little vases that can be definitely attributed to the Eighteenth Dynasty (say about the sixteenth or fifteenth century B.C.) is small, but it is worthy of note that for brilliancy of colour and for purity of the glassy paste, the early examples are unsurpassed in later times. This is certainly a remarkable fact, especially if we are to regard the art as a new one. I cannot enter here into the evidence that would seem to point to a foreign origin for this early Egyptian glass—it will be enough to mention the conquests of Thothmes III. in Syria, and the close relation of his successor, Akhenaten, the ‘heretic king,’ with Syria and Babylonia, as shown by his marriage, and by the famous Tell-el-Amarna tablets. As bearing on this question I may refer to certain paintings on a tomb of this age at Drag Aboul Neggah, near Thebes (reproduced in the Revue ArchÉologique, 1895, Pl. 15), which represent the unloading of a foreign trading-vessel. We can distinguish here the merchants offering certain objects of value to an Egyptian official; among these are certain striped vases which have been All this, however, is mere conjecture, while as an argument for the native origin of Egyptian glass we have the indisputable fact that the manufacture was carried on in the new town established by Akhenaten at Tell-el-Amarna (circa 1450-1400 B.C.). This is made clear by the discoveries of Dr. Petrie in the winter of 1891-92. Among the waste-heaps of some important glass factories he has found enough material to put it beyond doubt that glass was there prepared from its raw constituents. First, with regard to the frits, the essential preliminary stage in the manufacture of glass: as I have said, some such half-fused material must have been long in use by the Egyptians in the preparation of their blue glazes. Complete freedom from iron was attained in this case (just as in after days by the Venetians) by the employment of crushed pebbles of white quartz as the source of the silica. These pebbles served also for the floor of the furnace, and they were doubtless more easily crushed after being thus used for some time. The fritting-pans, to judge from some large fragments of frit that turned up, were shallow bowls some ten inches across. These pans were, it would seem, supported for firing by cylindrical jars resembling the seggars of porcelain works. The shape and size of the crucibles in which the frit was subsequently melted may be inferred from some masses of glass found in the rubbish. These The silica for this glass was derived, as we have seen, from quartz pebbles, but we have no information as to the source of the other important constituent, the alkali. It is known, however, that the glass of the ancients was essentially a soda-glass, made for the most part in maritime regions. Again, the possibility of obtaining an abundant supply of fuel has always been an important element in the selection of localities for glass-works. Now in the neighbourhood of Thebes fuel must always have been scarce and dear, and it is uncertain whether there was any source of soda near at hand. We may perhaps regard the glass-works of Tell-el-Amarna as due in the main to the caprice of that eccentric sovereign Akhenaten. They were probably started at his orders to supply the demand for the new material then coming I must now say something as to the source of the colours with which the Egyptians stained their glass. In the absence of any satisfactory analyses, we are strangely in the dark on this interesting question. Distinct shades of green, apart from greenish blue, were much less in favour with the Egyptians, nor did they ever attain to the brilliant tints of the malachite. A green glass, generally comparatively transparent, was indeed at times obtained when a certain amount of iron was present in the materials employed; but this was merely an accidental modification of the blue. The pale tint of the green felspar was also imitated in an opaque glass used for inlaying. For their reds the Egyptians were content to imitate the colour of the jasper, and here again they had recourse to copper; the transparent ruby tints of the mediÆval workmen, whether obtained from copper or gold, were unknown to them. Their opaque red glass owed its colour to the presence, in large quantities, of the basic oxide of copper. In later specimens as much as 15 or even 20 per cent. has been found; some tin seems to be The purple tint derived from oxide of manganese was known from very early times; the colour has been found in the glazes of the First Dynasty. It was, however, rarely used by the Egyptians for colouring glass. In some of Next to the two shades of blue, the colour most frequently found on Egyptian glass is a yellow, at times of a full mustard tint, but more often of a paler hue. Feather-like curved chevrons of this colour, combined with turquoise and opaque white on a deep blue ground, constitute indeed the normal type of decoration in a whole series of these little vases. I can find no record of any analysis of this yellow colour, but we may well compare it with the fine yellow glazes of the Chinese where the colour is derived from a mixture of an ochry earth with an oxide of antimony. There is no doubt that this last metal was known to the Egyptians; it was used at an early period by the women to darken the outline of their eyes. What has been said of the colours used by the Egyptians applies equally to the whole series of this primitive glass, indeed to a large extent to the glass of the Romans as well. It will form, I hope, a solid introduction to the subject generally. The little vases or unguentaria—by far the most important objects in this division of our subject—occur in Egypt in two forms. First, the true columnar kohl-pots, spreading out at the top in the form of a lotus capital. Secondly, globular jars with a pair of small handles: these jars are sometimes flattened at the sides so as to pass into the shape of a pilgrim’s flask. In a Of quite exceptional interest is the little vase in the British Museum, bearing the prÆnomen of Thothmes III., painted in yellowish enamel round the shoulder. I say painted, for in this case the decoration is simply applied to the surface, and not incorporated into the glass, thus forestalling the later processes of enamelling upon glass. The vase in question is somewhat rudely formed; it is of an opaque paste of a remarkably fine turquoise hue, and the sides are decorated with three conventional trees also in yellow enamel. This vase has been regarded as the earliest dated specimen of true glass that is so far known to us. The British Museum has lately acquired a curious vessel of glass, five inches in height, somewhat of the shape of a Greek crater. The wavy, dragged decoration on a pale slaty ground calls to mind certain early vases of wood or stone painted with a similar design. This vase, together with a cup of azure blue transparent paste, comes probably from the tomb of Amenophis II. Another little vase in the same collection, of aryballos outline, has been shaped apparently by the lathe—so accurate is the form—from a mass of opaque turquoise paste of frit-like nature. It was in the tombs of Amenophis II. and III., in the Valley of the Kings, near Thebes, that the unique series of glass vases, now in the Cairo Museum, was found (excavations of 1898-99). On more than one of these is The little pots for cosmetics, in the shape of truncated cones, are usually made of a turquoise-glazed fayence. Those of glass are very rare; one in the British Museum is decorated on a nearly black base with splashes of white enamel; this enamel is now suffering from some kind of efflorescence and is falling off in scales. On another fragment in the Glass-Room we find yellow and white splashes on a black ground. This splashed ware is characteristic, I think, of the later dynasties—the twentieth and the twenty-first. We are reminded by it of a similar application of enamel colours to glass that was much in favour in France in the seventeenth century. Apart from these little vases, the glass found in Egypt is confined to pieces for inlay and to beads or other small objects of verroterie. For the inlay the glass was rolled into slabs and cut out in the desired shape, the surface also being often carved in low relief: in later times the separate pieces were usually cast in open moulds. Beside the colours commonly used in the decoration of the vases, we find also an imitation of the pale green felspar, and the use of a red paste is, as I have said, more frequent. The individual pieces of the inlaid designs—they generally represent hieroglyphics, and are inserted into a basis of wood—are sometimes of a considerable size; some kneeling figures of a late period, In the Glass-Room at the British Museum may be seen an interesting collection of this later glass of Ptolemaic or perhaps Roman date, found at Denderah. There are many fragments of glass paste destined probably to be fitted into hollows cut in a wooden plaque, the intervening surface being covered with gilt gesso. Here, as at Tanis, the colours are practically the same as those found in the Eighteenth Dynasty glass, with the addition only of the orange-yellow tint to which I have already referred. It is in the centre of these wooden plaques that what are perhaps the largest pieces of Egyptian glass known to us are found. These are the scarabÆi of opaque blue glass, at times so closely resembling lapis lazuli that their true nature has been in dispute. Even the white marblings and spots of the native stone are imitated; indeed, in one specimen in the collection of Mr. Hilton Price, the little grains of pyrites in the stone, so much admired by the ancients, have been imitated by paillettes of gold scattered in the paste. (Cf. the passage from Theophrastus quoted below, p. 35.) 1 2 3 But the Egyptians made use also of other processes It is but a comparatively small number of the little glass vases with chevron patterns in our collections that have come from Egypt; up to the present time, however, no trace of their manufacture has been found in any other country; and although we cannot attribute so early a date as the Eighteenth Dynasty of Egypt to any of the little glass jugs and amphorÆ found in Greek and Etruscan tombs, this ‘Mediterranean’ glass is in every respect subsidiary to the Egyptian series. Glass in the MycenÆan AgeIt would, indeed, be quite beside the mark to make a separate division for the glass of the Greeks, who for one reason or another appear never to have found much attraction in the material. This would at least seem to have been the case in Greece itself during the great Such a statement, however, would not hold for the so-called MycenÆan Age. At that time glass was indeed a rare material brought by Phoenician merchants from Egypt, perhaps from Syria also. In some cases this imported glass may have been remelted and worked up again; it was certainly highly prized. Now the question has arisen: Is this glass inlay to be identified with the kyanos which, as Homer tells us, formed the frieze or cornice (???????) round the bronze walls in the palace of Alkinoos? Helbig, writing before the discovery of the frieze at Tiryns, maintained that the poet’s kyanos was of a glassy nature. He tells us (Das Homerische Epos, pp. 79 seq., quoted in Schliemann’s Tiryns)—‘This kyanos must be identified not with blue Helbig goes on to identify the unfired kyanos with the copper ore of Cyprus—the blue carbonate which the Phoenicians brought to the Pharaohs, and which was the main source of copper for the Eastern Mediterranean. At MycenÆ itself little glass has been found—some minute tubular beads, decomposed externally but with a core of blue glass (pronounced by Landerer to contain lead and cobalt), and a few beads of clear glass. In the bee-hive tombs of Attica, especially at Spata, were found a number of small objects of glass, cast, says M. Tsountas, in moulds of granite and basalt which have been discovered on the spot. Indeed in all these tombs, next to the beads, the commonest examples of glass are the little rosettes and plaques cast in a mould with a design in low relief; these rosettes are often pierced with holes and were probably sewn on to the dresses of the women. The surface, and sometimes the whole body, is decomposed, But it is from the Greco-Phoenician tombs of Cyprus and Rhodes that the greatest quantity of this primitive glass (chiefly in the form of unguentaria) has been obtained; again from Greco-Etruscan tombs in Tuscany, from what may be called Greco-Oscan tombs in Southern Italy, and even from Greco-Scythian tombs in Southern Russia—from, in fact, nearly all the lands visited by Phoenician traders. How widely spread was the acquaintance with these little vases we may infer from the imitations of the chevron pattern on coloured pottery found in Melos. A similar decoration has been found on Lydian pottery from tumuli near Sardis, and even, it is claimed, upon prehistoric pottery brought from the Nilghery Hills in Southern India. These little vases now take characteristic Greek shapes. The columnar kohl-pots are replaced by alabastra, very similar in form. Even more common in later tombs are the little amphorÆ, sometimes pointed at the base, at others ending in a rounded knob; a jug-shaped form like the Greek oinochoe is also common. In some cases—in specimens of Egyptian origin very frequently—the surface of the glass is entirely unchanged. But when the decay of the surface has once set in, we generally find that the decomposition has eaten deeply into the substance of the glass (see above, p. 16). In such cases it often happens that the blue colour has been entirely removed, and the vase has assumed the appearance of a dull, whitish pottery. I will now briefly mention a few abnormal types of How much these little vases were valued appears from the stands of gold (decorated with applied spirals of an early type) on which they were sometimes placed in the tombs. M. Reinach mentions some instances from Crimean tombs, where chevron vases of the usual type have been found attached by a fine chain of gold to the bracelet worn by the deceased (Tolstoi and Kondakof, AntiquitÉs de la Russie MÉridionale, 1891). The little bottles that we see in the hand of the recumbent effigy on Phoenician sarcophagi, are probably to be identified with our glass vases; we have an instance of this on the well-known female figure in the Palermo Museum (figured by Perrot and Chipiez and elsewhere). Later Survivals of the Primitive GlassThere are in the British Museum some little glass amphorÆ from Camirus and Ialysus in Rhodes, and others from Amathia and Salamis in Cyprus, on which the chevron bands are not incorporated into the glass base, but laid on the surface as in later enamelled ware. The chevrons in such cases cannot have been ‘dragged’ by the old ingenious plan; they must have been elaborately applied one by one. We may recognise probably in such cases the survival of an old method of decoration after the technical process by which it was produced had been lost. The glass itself, too, is of a late type—transparent and hastily formed. I think that the date of some The beads and other objects of verroterie from the Cyprian and Rhodian tombs differ much from those found in the MycenÆan sepulchres of Continental Greece. There are in the British Museum some large beads of perfectly clear glass from Ialysus in Rhodes What little I have to say of the rare specimens of glass of a more advanced type found in Greek tombs, I will postpone to the next chapter. The Primitive Glass of Western AsiaThe civilisation of the inhabitants of the Euphrates valley reaches probably as far back as that of the Egyptians. Its influence has extended at various times from the Balkan peninsula to the borders of India, including Persia on the one hand, and on the other the kingdoms that grew up in Syria, and among the primitive races of Asia Minor. Now, if we are to judge by the contents of our museums, all these lands, at least up to the time of I have already noticed the coincidence of the sudden development of the manufacture of glass in Egypt with the first close contact, at the period of the Eighteenth Dynasty, of the Egyptians with races already affected by Babylonian culture; and we must remember that the glass made within a few years of this first contact was never surpassed in later times. Nor must we overlook the classical tradition concerning the invention of glass handed down to us by Pliny and other writers. According to this tradition, glass was first made by Phoenician traders on the coast of Syria. Here, at any rate, the three great requisites for the manufacture were at hand—a pure silica in the convenient form of a white sand, alkali either from the ashes of marine plants or from adjacent salt deposits, and finally, an abundant supply of fuel. And yet, for the present, all that can be said is that we must associate all the early glass that has been found in other countries than Egypt with the trading peoples of the Eastern Mediterranean, whether Pelasgians, Carians, or Phoenicians. To a similar source we may refer the rare glass beads found in tombs of the bronze period in Western Europe, as well perhaps as the scanty specimens of glass that have come from Assyria and Persia. To these last we will now turn. Of glass of undoubted Assyrian origin, by far the most important example known to us is the little barrel-shaped vase with stunted handles found so many years The Assyrians and the Babylonians before them were, we know, from an early date past masters in the manufacture of coloured glazes. The turquoise blue glaze of their pottery and wall tiles has been handed down in these lands apparently without a break, through Persian and Sassanian times to their later Arab masters. In the Louvre are some slabs of a translucent glass of a fine turquoise tint, about three inches square, and three-quarters of an inch in thickness, which were found in Apart from these examples, the glass brought from Western Asia is of the usual later Phoenician or Roman type—‘lachrymatories’ and bowls mostly of greenish glass. It is not till we come to Sassanian times that we can find any distinctive features, and the rare specimens dating from that period will best be treated in a later chapter along with the contemporary Byzantine glass. I may mention finally that there are one or two passages in our Greek classics that may point to the use of glass by the Persians in the fifth century B.C. For instance, among other hardships suffered by the Athenian embassy to the great king—so we are told ironically by Aristophanes in his Acharnians—they were forced to drink from vessels of gold and from cups of glass, or, may be, of rock crystal (?? ?a????? ??p??t??). We know of no glass other than that of Roman type from the Bible lands, using that expression in the narrower sense, nor in the whole literature of the Hebrews is there, as far as I know, any definite reference to glass. The word Zechuchoth, which occurs in a passage of Job (xxviii. 17), is translated in the Vulgate by vitrum, but like the Greek ?a???, it may as well refer to rock crystal, or any other hard transparent substance. There is, however, a passage in Jeremiah (ii. 22) which is really of more interest to us. It begins, ‘For though thou wash thee with nitre and take thee much soap.’ From this passage we learn at least that the natron of the salt lakes was in early days applied to practical ends. This was one step to its application to the manufacture I have thought it well to bring together these few facts and theories bearing upon the early knowledge and use of glass in Western Asia, for could its early existence in these lands be once definitely established, we should be better able to fill up a gap in our history, and it would perhaps be then possible to solve that obscure problem—When and where was the great step taken and the blowing-tube first made use of for the production of a vesicle or paraison of glass? At the present day, in some of the villages around Hebron, glass is still made by very primitive processes. Thence come the many-coloured bangles of glass, dear to the Arab women of Palestine and Egypt; some of these have found their way into collections of Egyptian antiquities, so closely do they resemble the old wares. This glass is carried by Arab and Jewish pedlars as far, it is said, as the Soudan. Here, indeed, we have an industry that may well be regarded as a survival from very early days. |