a kind of earthen or stone ware, of the manufacture of which a full account is given in the Encyclopedia from Grofier and Reaumur. It may be proper, however, to add here, from Sir George Staunton, that one of the principal ingredients in the Chinese porcelain called pe-tun-tse, is a species of fine granite, or compound of quartz, feldspar, and mica, in which the quartz bears the largest proportion. "It appears (says Sir George) from several experiments, that pe-tun-tse is the same as the groan-flute of the Cornish miners. The micaceous part in some of this granite from both countries, often contains some particles of iron; in which case it will not answer the potter's purpose. This material can be calcined and ground much finer by the improved mills of England, than by the very imperfect machinery of the Chinese, and at a cheaper rate, than the prepared pe-tun-tse of their own country, notwithstanding the cheapness of labour there. The kaolin, or principal matter mixed with the pe-tun-tse, is the groan-clay also of the Cornish miners. The wharf-ice of the Chinese is the English soap rock; and the joss-pan is affected to be gypsum.

"The manufacture of porcelain is said to be precarious, from the want of some precise method of ascertaining and regulating the heat within the furnaces, in consequence of which, their whole contents are baked sometimes into one solid and useless mass." If this be so, Wedgwood's thermometer would be a present highly valuable to the Chinese potter, if that arrogant and conceited people would condescend to be taught by a native of Europe.