[Illustration: PLATE 83]
Assyrian glass is among the most beautiful of the objects which have been exhumed. M. Botta compared it to certain fabrics of Venice and Bohemia, into which a number sit different colors are artificially introduced. But a careful analysis has shown that the lovely prismatic hues which delight us in the Assyrian specimens, varying under different lights with all the delicacy and brilliancy of the opal, are due, not to art, but to the wonder-working hand of time, which, as it destroys the fabric, compassionately invests it with additional grace and beauty. Assyrian glass was either transparent or stained with a single uniform color. It was composed, in the usual way, by a mixture of sand or silex with alkalis, and, like the Egyptian, appears to have been first rudely fashioned into shape by the blowpipe. It was then more carefully shaped, and, where necessary, hollowed out by a turning machine, the Marks of which are sometimes still visible. The principal specimens which have been discovered are small bottles and bowls, the former not more than three or four inches high, the latter from four to five inches in diameter, [PLATE LXXXIII., Fig. 4.] The vessels are occasionally inscribed with the name of a king, as is the case in the famous vase of Sargon, found by Mr. Layard at Nimrud, which is here figured. [PLATE LXXXIII., Fig. 2.] This is the earliest known specimen of transparent glass, which is not found in Egypt until the time of the Psammetichi. The Assyrians used also opaque glass, which they colored, sometimes red, with the suboxide of copper, sometimes white, sometimes of other hues. They seem not to have been able to form masses of glass of any considerable size; and thus the employment of the material must have been limited to a few ornamental, rather than useful, purposes. A curious specimen is that of a pipe or tube, honey-combed externally, which Mr. Layard exhumed at Koyunjik, and of which the cut [PLATE LXXXIII., Fig. 1] is a rough representation.