The manufacture of earthen ware, as far as depends upon the preparation of the materials, they have carried to a pitch of perfection not hitherto equalled by any nation, except the Japanese, who are allowed to excel them, not only in this branch, but also in all articles of lacquered and varnished ware, which fetch exorbitant prices even in China. The beauty of their porcelain, in a great degree, depends upon the extreme labour and attention that is paid to the assortment, and the preparation of the different articles employed. These are in general a fine sort of clay called _Kao-lin_ which is a species of Soap-rock, and a granite called _Pe-tun-tse_, composed chiefly of quartz, the proportion of mica being very small. These materials are ground down and washed with the greatest care; and when the paste has been turned or moulded into forms, each piece is put into a box of clay before it goes into the oven; yet with every precaution, it frequently happens (so much is this art still a work of chance) that a whole oven runs together and becomes a mass of vitrified matter. Neither the Chinese nor the Japanese can boast of giving to the materials much elegance of form. With those inimitable models from the Greek and Roman vases, brought into modern use by the ingenious Mr. Wedgwood, they will not bear a comparison. And nothing can be more rude and ill-designed than the grotesque figures and other objects painted, or rather daubed, on their porcelain, which however are generally the work of the wives and children of the labouring poor. That they can do better we have evident proof; for if a pattern be sent out from England, the artists in Canton will execute it with scrupulous exactness; and their colours are inimitable. The manufacture of glass was totally unknown among them until the last century when, at the recommendation of the Jesuits, a family was engaged to go from France to Pekin, for the purpose of introducing the art of glass-making into the country. The attempt failed of success, and the concern, at the death of the manager, was broken up. In Canton they melt old broken glass and mold it into new forms; and they have been taught to coat plates of glass with silver, which are partially used as looking-glasses; but their common mirrors are of polished metal, which is apparently a composition of copper and zinc.