Excerpt from A System of Mineralogy, Vol. 1: In Which Minerals Are Arranged According to the Natural History Method I have again, as in former editions of this work, the pleasure of acknowledging the advantages I derived from the information and communications of friends, particularly from the numerous facts transmitted to me by Mr Hau land. 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.