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Excerpt from Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Vol. 19: March, 1880, to Dec., 1881 Letters of envoy were received from the Central Physical Observatory at St. Petersburg, January, 1880; from the Royal Observatory at Greenwich, February, 1880, and from the Meteorological Society in London, February, 1880. 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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9781334489242

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