Excerpt from A Preliminary Report on the Manganese Deposits of Georgia States Geological Survey; the bulletins of the Geological Society of America; the Transactions of the American Institute Of Mining Engineers; and the elaborate volume on Manganese; Its Uses, Ores and Deposits, by Dr. R. A. F. Penrose, published as Volume I, of the Arkansas Geological Survey, have been constant sources of helpful information. The reports by Drs. Hayes and Penrose have been freely used in the preparation of certain parts of this report. 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.