Excerpt from Science, Vol. 15: A Weekly Journal Devoted to the Advancement of Science; January-June, 1902 Chemical, Society, American, J. L. H, 126, Nich ol's Research Medal, 875; Northeastern Sec tion, H. Fay, 72, 308, 509, 628; North Caro lina Section, C. B. Williams, 105; Society of Washington, L. S. Munson, 145, 666. 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.