Excerpt from Proceedings of the American Association: For the Advancement of Science, Nineteenth Meeting, Held at Troy, New York, August, 1870 In the absence of the President, the vice-president occupied the chair. 1 Mr. Hartt being absent, his place was filled by Mr. F. W. Putnam. 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.