Excerpt from The Primary Decomposition Products of Fractional Carbonization of Illinois CoalLater, Parr and Francis (2) used non-oxidizing atmospheres such as nitrogen and steam in order to eliminate variables due to oxidation. Goals heated in these inert media gave a residue which was smokeless and yet contained much of the volatile con stituents. While using an atmosphere of steam, it was noticed that the temperature rose very abruptly at approximately 315° C. This phenomena has later been developed into a new theory for the coking of coals by means of exothermic reactions and a careful control of temperatures.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.