Book excerpt: Excerpt from Publications on the United States Naval Observatory, 1906, Vol. 4: In Four Parts, Parts I to III This volume contains the transit circle observations of the Sun, Moon, planets, and miscellaneous stars made at the United States Naval Observatory from January 1, 1900, to September 4, 1903. From January 1 to January 16, 1900, the observa tions were made with the 6-inch transit circle. During this period certain altera tions were being made in the piers of the 9-inch transit circle, the floor between the piers, the lanterns for field and microscope illumination, and the supports of the microscopes. From January 23, 1900, to October 2 5, 1901, the observations were made with the'9-inch transit circle. From October 26, 1901, to September 4, 1903, the observations were made with the 6-inch transit circle. During this last-named period extensive repairs, including the making of a new micrometer and new pivots and the alteration of the system of field and microscope illumination, were being made on the 9-inch transit circle. Until March 2 5, 1901, the astronomical work of the Observatory was in charge of the Astronomical Director, Prof. S. J. Brown, U. S. Navy, under the supervision of the Superintendent, Capt. C. H. Davis, U. S. Navy, who at that time assumed direct charge of all this work. Captain davis was succeeded as Superintendent by Capt. (now rear-admiral) C. M. Chester, U. S. Navy, November I, 1902. 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.