Excerpt from The Expansion of Gases by Heat: Memoirs by Dalton, Gay-Lussac, Regnault and Chappuis The experimental basis upon which Dalton founded his generalization was, however, meagre and, from a modern stand point, quite inaccurate - as was the case also with the evidence upon the strength of which he put forth his Law of Multiple Proportions and the original Atomic Hypothesis. The work done upon this subject by Dalton and gay-lussac - and es pecially by the latter, - the results of which were published in 1802, forms an epoch in the history of the careful study of the properties of gases, if for no other reason than because of the recognition of the necessity for the thorough removal of water vapor from the gas examined, before concurrent results could be expected. 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.

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