Excerpt from Rudimentary Treatise on Mineralogy, Vol. 2 of 1: To Which Is Added, a Creatise on Rocks or Mineral Aggregates A third edition of this useful work being called for by the extensive sale of the first and second editions, I have added in this edition Mr. Dana's admirable Treatise on Rocks. 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.