Excerpt from The Composition, Heat Value, and Gasoline Content of Some Illinois Natural Gases I wish to acknowledge the great help and assistance of dr.d.f. Mcfarland, un1er whose direction the work was carried out. Dr.mcfarland's experience in natural gas analysis and his valuable suggestions helped remove many of the difficulties attending the work. I wish also to express my appreciation. 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.