Catalogue of Specimens in the Museum of Practical Geology
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Excerpt from Catalogue of Specimens in the Museum of Practical Geology: Illustrative of the Composition and Manufacture of British Pottery and Porcelain, From the Occupation of Britain by the Romans to the Present Time When the sanction of the Treasury was given, in 1835, to the suggestion that advantage should be taken of the progress of the Geological Survey to form collections illustrative of the mineral wealth of the country, and of the application of its various mineral substances to the useful purposes of life, the Geological Survey was engaged upon Cornwall. Among the important substances there obtained were certain granite rocks known as Cornish or China-stone, and an artificial product named Cornish or China-clay, substances then largely employed in the composition and manufacture of porcelain and of certain earthenwares, and still more extensively used for these manufactures in the present day. The specimens obtained of these mineral substances for the Museum, then in Craig´s Court, immediately led to collections of others illustrative of the earthenware and porcelain more or less manufactured with them. As the progress of the Geological Survey continued, various other British mineral substances, which either had been in former times or were now employed for ceramic purposes, became known; and it was considered desirable to form a collection which should illustrate the composition and manufacture of British pottery and porcelain, from the occupation of Britain by the Romans to the present time. Although some portions of the collection in the Museum of Practical Geology may be defective, for the present it may be regarded as the best that has hitherto been formed; and there is every hope, especially from the continued donations of objects to it, which purchase could not obtain, that it may gradually be rendered still more effective for instruction. In forming the collection it became needful to show, to a certain extent, the progress of enamelled colours from early times. Indeed, it would have been difficult to understand that part of the subject without such specimens. Hence those showing the enamel colours found at Nineveh and Babylon, the examination of which enabled Dr. Percy, metallurgist to the Museum, to point out that certain metallic oxides and their combinations were systematically used in enamel colours many centuries before the periods usually assigned. In like manner certain Greek vases became valuable, as also specimens from Italy, commonly known as Majolica, and from other countries, in obtaining knowledge applicable to a proper consideration of the advance made in the composition and manufacture of British pottery and porcelain. Such additions, however, are limited, and have their general bearing pointed out in the catologue. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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