Excerpt from Chemistry of Common ThingsDirect Combination takes place in the familiar phenome non oi burning. It was not until a study had been made of simple cases of direct combination, similar to' those described below, that a knowledge was obtained of the part played by the oxygen of the air 111 ordinary burning.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.