transparent white, extremely brilliant, and as pure as a precious stone; and others of a beautiful blue, and equally pure. In Egypt and Syria, no difference was known between the real and artificial Yeschm, the latter being of the same form, thickness, and specific gravity as the former. It is even asserted, that in Cairo, and other cities, the artificial vases were as highly valued as those of the real Yeschm, and that enormous prices were given for them. The Chinese have also equally imitated their Ju* stone, which was too costly for persons of moderate fortune. It is a coloured Glass of rich appearance, and greenish tint, and of such hardness and weight, that it frequently surpasses the real Ju. Fragments of it are often to be met with in the shops of the venders of curiosities, and some are erroneously denominated rice composition. A square solid pedestal of yellow tinged glass, of Chinese manufacture is preserved in the Museum of Economic Geology, in London: it is surmounted by a small lion, carved by the engraver's mandril tool, at the lathe, out of the upper part of the solid pedestal, at great labour and cost. (See PLATE 5, fig. 5.) This was, probably, made from English Glass, re-fused in China with an increased quantity of lead. Small coloured vases, figures, and almost every description of ornament sculptured in stone, have been imitated in opaque Glass, by the Chinese. A specimen of artificial Ju stone may be seen at the British Museum: it is of a bluish-white colour, resembling enamel, of an octangular form, and about the size of a snuff-box; it is extremely hard, and, in proportion to its size, of astonishing weight. Notwithstanding the Chinese