Excerpt from System of Theoretical and Practical Chemistry, Vol. 1 of 2Since the last edition in 1807, the discovery of the alka line and earthy metalloids, the controversies on the im portant subjects of definite or indefinite combination in chemical affinity, and the nature of chlorine gas, have greatly interested the chemical world. The first Volume of the elements of Chemical Philosophy by Sir Humphrey Davy has appeared, bearing the following characteristics, viz. That chemical attractions greatly depend on, if they be not the same with electrical - that the alkalies and alkaline earths are metallic oxyds-that all chemical combination takes place in multiple proportion - that chlorine is a sub stance sui generis, and like oxygen a supporter of combus tion positions that as yet may require hesitation and fur-t ther examination, but they are of too extensive applica tion to be neglected.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.