Excerpt from The Coal-Regions of America: Their Topography, Geology, and Development; With a Colored Geological Map of Pennsylvania, a Railroad Map of All Coal-Regions, and Numerous Other Maps and Illustrations For the benefit of those who have but little knowledge of geology, some general information, applicable to all the coal regions, is given in the Appendix on the origin and place among the rocks Of coal-beds. This, as well as Chapter VI. 011 the characteristics Of coal-seams, should properly be read by non-geological readers before the accounts of the coal-regions. A chapter on the conditions of success in the coal-trade, one on the combustion Of coal, and one on the iron-ores Of the coal measures, with the latest statistics Of the coal mined in the United States, and in foreign countries, are also added at the close Of the volume. Some of these statistics are later than those given in the text. 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.