LOCKYER'S ASTRONOMY. ELEMENTS OF ASTRONOMY: Accompanied with numerous Illustrations, a Colored Representation of the Solar, Stellar, and Nebular Spectra, and Celestial Charts of the Northern and the Southern Hemisphere. By J. NORMAN LOCKYER. American edition, revised and specially adapted to the Schools of the United States. The volume is as practical as possible. To aid the student in identifying the stars and constellations, the fine Celestial Charts of Arago, which answer all the purposes of a costly Atlas of the Heavens, are appended to the work-this being the only text-book, as far as the Publishers are aware, that possesses this great advantage. Directions are given for finding the most interesting objects in the heavens at certain hours on different evenings throughout the year. Every device is used to make the study interesting; and the Publishers feel assured that teachers who once try this book will be unwilling to exchange it for any other. D. APPLETON & CO., PUBLISHERS, 549 & 551 BROADWAY, NEW YORK. |