Excerpt from The Compression and Transmission of Illuminating Gas: A Thesis Read at the July, 1905, Meeting of the Pacific Coast Gas Association All gases are sponge-like in that they hold various vapors from water vapor to carbon vapors, which they lose to a more or less extent when the sponge is squeezed as in the act of compressing in a cylinder, and what is squeezed out and how much of it is not essential to our discussion, and lies better in the realm of the technical gas engineer. We have assumed, however, that inasmuch as when we compress a gas the temperature rises in a fixed ratio to the pressures, that there is no direct tendency for a gas'to change its physical condition in the com pressing cylinder, for an added temperature gives an added capacity for saturation, and this probably in creases in about the same ratio as the volume dimin ishes during compression. So that for commercial pur poses we can not be far wrong in assuming the physical condition of the gases as constant during the range of pressures that will be ordinarily met. 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.