In the press. dedicated, by permission, to His Royal Highness George Prince of Wales and Duke of Cornwall : Mineralogia cornubiensis; or, A general treatise upon minerals, mines, and mining; wherein the theory and natural history of strata, fissures, and lodes, as to their origin, matter formation, direction, inclination, interruption, elevation, and depression, are rationally accounted for. With the methods at large of discovering, working, and drawing the water of tin, copper, and lead mines. Together with the cleansing and metalizing their products; shewing each particular process for digging, raising, dressing, assaying, and smelting of ores. To which will be added, an etymological explanation of the terms and idioms of tinners: as well as those which are used among the lead mines and collieries of Great-Britain. By W. Pryce, of Redruth in Cornwall.