Excerpt from Monthly Notices of the Royal Astronomical Society, Vol. 39: Containing Papers, Abstracts of Papers, and Reports of the Proceedings of the Society, From November 1878 to November 1879 I may mention that the other evening (july 5) I was surprised to see Satellite IV in transit appear as a dark spot instead of the usual bright point when on the less illumined surface near the edge of the planet; in fact it was at entry nearly as black as its shadow, which was just passin off on the other side. This I know has been seen before, bot with Satellites III and IV, and must, I presume, be attributed to one side of the satellite reflecting less light than the other, or else to some violent changes in its atmosphere. Before it came on to the disk I noticed that it was fainter than usual. 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.