Excerpt from Positions of Fundamental Stars Deduced From Observations Made at the U. S. Naval Observatory Between the Years 1862 and 1867 It appears, then that in the case supposed, that in which the groups are of a uniform length of six hours, and the clock stars are scattered uniformly through each group, each revision of the fundamental catalogue will tend to diminish the error of single period by rather less than one-fifth, and that of double period by more than one-half. The latter will therefore be cut down much more rapidly than the former. 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.