Excerpt from Popular Lectures on Astronomy: Delivered at the Royal Observatory of Paris The publishers of the present volume, being aware that errors of a more or less important kind, must, under such circumstances, have prevailed in the original Belgian edition, and still more in the English translation, and that omissions and chasms must have required to be filled up by some person conversant with the science, and capable of writing upon it in a clear and familiar style, applied to Dr. Lardner, and induced him to revise the reported Lectures, and to add to them such topics as might appear desirable to give them increased utility. The result of this arrangement has been the present volume. 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.