3

SMALL VASES OF “PRIMITIVE” GLASS
1. EGYPTIAN, NINETEENTH DYNASTY. 2. PROBABLY FROM GREEK ISLANDS. 3. ŒNOCHOE, FROM THE SLADE COLLECTION.

‘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 covered with glass, probably by winding a thread of glass round it, as large beads of this age are thus made. The vase could then be reheated as often as needed for working by holding it in a furnace, the metal rod forming a handle, and the sand inside the vase preventing its collapse. Threads of coloured glass could then be wound round it and incorporated by rolling; the wavy pattern was produced by dragging the surface in different directions, the foot was pressed into shape by pincers, the brim was formed, and the handles were put on. Lastly, on cooling, the metal rod would contract and come loose from the neck, and after it was withdrawn the sand could be rubbed out from the body of the vase.’

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 doubtfully recognised as of glass. In the hieroglyphics accompanying wall paintings of this period we more than once find that vessels of rock crystal and lapis lazuli are mentioned, as well as blocks of uncut stones, and neither by the hieroglyphics used nor by the representation of the objects would it be easy to distinguish the latter material from lumps of glass. Again, Syrian workmen are known to have been employed at this time in Egypt, and nowhere would this be more likely than in the immediate neighbourhood of the palace of the king at Tell-el-Amarna, where the glass-works described by Dr. Petrie were situated.

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 masses had been allowed to cool in the melting-pot, and the presence of frothy and worthless matter at the top was a proof that the glass was not merely remelted in them, but prepared on the spot from the above-mentioned frit. The glass was left to solidify in the crucible, and when cold, the crucible, as well as the scum at the top, was chipped away, leaving a clear lump of good glass. Dr. Petrie thinks that this glass was not remelted as a whole for subsequent working, but that lumps of suitable size were chipped off, and these, being heated to softness, ‘were then laid on a flat surface and rolled by a bar worked diagonally across them; ... the marks of this diagonal rolling are seen on the finished rolls.’ The rods thus produced were now drawn out to form a cane, or, if previously rolled flat, a thin ribbon. Beads were formed by winding these canes or threads of glass round a wire, or rather round a fine rod of hammered bronze, for wire-drawing was an invention of a much later date; such rods have indeed been found with the unfinished beads still on them. Similar canes of glass were doubtless worked in to the sides of the little vases to form the banded and chevron decoration which I have already described.

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 into favour at his court. In so far as the making of glass ever became an industry in Egypt, we must look rather to the neighbourhood of the Delta for its development. There at least fuel would be more abundant, and there a supply of soda was at hand in the ashes of marine plants, even if the natron of the adjacent salt lakes was not yet used for the purpose.[[10]] But until a much later date, glass was always a somewhat rare substance in Egypt, and was, it would seem, never produced on a large scale.

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.[[11]] But everything points to the predominance of copper as a colouring material at an early period, so much so that we may perhaps consider—and this is a suggestion that has indeed been already made by a French writer—that the invention of glazes in the first place, and then that of glass, were offshoots of the metallurgy of copper, and that these industries may therefore be especially connected with the copper age. In any case, it was in all probability not, as in later days, a more or less transparent and colourless glass, but rather one of a pale or dark blue colour, that at the commencement formed the basis to which a decoration of other colours was added.

The famous blue of the Egyptians, of which we hear from Vitruvius and other later writers, was essentially a silicate of soda, lime, and copper. It should be borne in mind that without the presence of the first two bases—the lime and the soda—a good copper blue in glass or glaze cannot be obtained. Indeed in the case of porcelain and fayence, the blues obtained from copper have always been confined to various shades of turquoise, as in the well-known glazes and enamels of the Chinese and the French, and even these turquoise blues, always, as we have said, containing lime and soda as well as copper, have only been produced with great difficulty. The mastery of a complete series of copper blues, ranging through every shade from a blue-black to a pale greenish turquoise, we may thus regard as a special triumph of the old Egyptians. At one period a darker shade has been in favour, at another a paler hue, according as the lapis lazuli on the one hand, or the turquoise or green felspar on the other, was taken as the standard of excellence, so that the shade of colour of the glaze on a scarab or a bead may at times throw some light on its date.

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.