The white porcelain of Plymouth is one of its notable features, for in it some remarkably fine works exist in different collections. These mostly consist of salt-cellars, pickle-cups, and toilet-pieces, formed of shells and corals, beautifully, indeed exquisitely, modelled from nature. The shells and corals, and other marine objects which compose these pieces, are remarkably true to nature, and their arrangement in groups is very artistic and good. As a rule these pieces are not marked. Some of the forms of these shell groups are shown in the accompanying engravings. The accidental arrangement of the small shells, sea-weeds, and coral, are very characteristic of Plymouth manufacture, and evince a high degree of artistic excellence. The salt-cellars of this description, in the Museum of Practical Geology, are good examples, and useful for reference. In white, too, Cookworthy produced figures, birds, and animals, both singly and in groups, which bore no mark. Amongst the most successful and important productions of the Plymouth works, in white, are busts, of which one or two excellent examples are in existence. The finest of these is a bust, of large size, of King George II., in possession of the late Dr. Cookworthy, of Plymouth, the great-nephew of William Cookworthy, the founder of the works, from whom it has passed in succession to its present owner, who is now the sole representative of the family. The bust, which is remarkably fine, and exquisitely modelled, evidences a very advanced state of Art, and shows great skill, both in modelling, in body, and in firing. Its height is seventeen inches, and its extreme width thirteen inches. Dr. Cookworthy also possessed some remarkably fine allegorical figures, groups for candlesticks, &c., all, although unmarked, said to be authenticated as Plymouth manufacture. An elephant said to be probably of Plymouth manufacture is in the Museum of Practical Geology, as are also Figs. 708 and 713. [Illustration: Fig. 709.] The prosecution of the new works having progressed satisfactorily, Cookworthy in 1768 took out a patent for the manufacture of “a kind of porcelain newly invented by me, composed of moor-stone or growan, and growan clay.” The patent was dated the 17th of March, 1768, and contained the usual proviso that full specification should be lodged and enrolled within four months of that date. This specification was duly enrolled, and I am happy to be able to give it _in extenso_ to my readers. It is a most interesting document, and contains a great deal of valuable information; it is as follows:-- “To all people to whom these presents shall come, I, William Cookworthy, of Plymouth, in the County of Devon, Chemist, send greeting.