Excerpt from Chemical Study of Illinois Coals In the fifteen years which have intervened since the first study was made of the chemical composition and properties of the coals of the State, notable advancement has been made in methods of procedure in connection with such work. This result has naturally followed our increased knowledge and better understanding of the properties of this complex substance, but especially has it been caused by the marked changes which have occurred in the methods of purchasing coal, especially ...
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Excerpt from Chemical Study of Illinois Coals In the fifteen years which have intervened since the first study was made of the chemical composition and properties of the coals of the State, notable advancement has been made in methods of procedure in connection with such work. This result has naturally followed our increased knowledge and better understanding of the properties of this complex substance, but especially has it been caused by the marked changes which have occurred in the methods of purchasing coal, especially on the part of large consumers, whose contracts are based on specifications as to quality. This method has led to a care ful scrutiny of all processes yielding factors which enter into the final settlement. Small errors in large consignments may result in serious injustice to one or the other of the parties involved. These studies, therefore, have been especially directed to sampling, the conservation of moisture, and the determination of ash and of heat values. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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.
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