THE GASES OF THE ATMOSPHERE
Reading edition
The cover image was created by the transcriber, and is in the public domain.
STEPHEN HALES.
THE GASES
OF
THE ATMOSPHERE
THE HISTORY OF THEIR DISCOVERY
BY WILLIAM RAMSAY, F.R.S. PROFESSOR OF CHEMISTRY IN UNIVERSITY COLLEGE, LONDON
WITH PORTRAITS
London
MACMILLAN AND CO., Ltd. NEW YORK: THE MACMILLAN CO. 1896
All rights reserved
“Modern discoveries have not been made by large collections of facts, with subsequent discussion, separation, and resulting deduction of a truth thus rendered perceptible. A few facts have suggested an hypothesis, which means a supposition proper to explain them. The necessary results of this supposition are worked out, and then, and not till then, other facts are examined to see if their ulterior results are found in Nature.”—De Morgan, A Budget of Paradoxes, ed. 1872, p. 55.