Petralogy, Vol. 1

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Excerpt from Petralogy, Vol. 1: A Treatise on Rocks The study of natural history has been divided by the most esteemed authors, and by the general voice, into three King. Doms, the Animal, Vegetable, and Mineral. These have again been subdivided into Classes, Orders, Genera, Species, and Varieties. These terms may be considered as strictly pro per with regard to animals and vegetables 3 but as their com ital or animated principle, their kingdom, to which they have al use than after a due examination, become dubious 3 and has given rise to many variations and contradictions, and not a little obscurity. It is confessed that human systems have but a very remote connexion with the great Operations of Nature, and are to be regarded as mere artificial memories: hence in mineralogy some eminent writers entirely reject Genera, while others, with Dauben ton, say that there are no Species 3 and Dolomieu has in vain exhausted his acuteness and science to prove that real Species exist in this department. With all his metaphysical prolixity he has no disciples in this doctrine, and the idea of a Species remains dark, even to the most enlightened minds, because it is false and unnatural, as in the other branches of natural history 9. Species produces a similar progeny. 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.