Excerpt from Light Science for Leisure Hours: A Series of Familiar Essays on Scientific Subjects, Natural Phenomena, Etc This and the other Essays from the Daily News are selected from a large number of articles which I wrote in the years 1868 It was by my kind friend Mr. Walker, formerly editor of the Daily News, that I was first urged to collect my Essays into a volume. I have to thank the proprietors and the present editor of the Pauly News, and the proprietors and editors of the other journals from which the pres ent series has been selected, for freely according me permission to reprint these Essays. 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.