Excerpt from Popular Astronomy: A Concise Elementary Treatise on the Sun, Planets, Satellites and Comets The author has no other apology to present for Offer ing to the public the following work on Popular Astronomy than the marked favor with which his Planetary and Stellar Worlds has been received, both in this country and in Europe. The science of Astronomy is so rapidly progressive that to keep the public advised of its advances new works are required almost every year. This may be offered as an additional reason for the present publica tion. 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.