Contributions to Economic Geology, 1907 (Classic Reprint)

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Excerpt from Contributions to Economic Geology, 1907 The papers have been grouped according to the subjects treated. At the end of each section is given a list of previous publications on that subject by this Survey. Thes'e lists will be serviceable to those who wish to ascertain what has been accomplished by the Survey in the investigation of any particular group of mineral products. They are generally confined to Survey publications, though a few titles of important papers published elsewhere by members of the Survey are included. Material assistance in the preparation of this volume has been ren dered by W. C. Phalen, and to him is largely due the promptness of its publication. 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.