Popular Books on Astronomy
By Richard A. Proctor, F.R.A.S.
Half=Hours with the Stars
A Plain and Easy Guide to the Knowledge of the Constellations
Showing, in 12 maps, the position for the United States of the Principal Star Groups, night after night, throughout the year, with an introduction and separate explanation of each map.
True for every year. Maps and text especially prepared for American students.
4to. Boards, $2.00 net By mail, $2.20
This is an entirely new edition, with new plates, prepared expressly for American students, of a work which in its original London issue has attained exceptional popularity.
"No teacher who has the responsibility of instructing a class in astronomy can afford to be without it."—Chicago School Herald.
"A practical help to the student, and a valuable book of reference to the scholar."—Buffalo Express.
Easy Star Lessons
With 48 Star Maps and 35 other Illustrations.
8vo. $2.00 net By mail, $2.20
"Nothing so well calculated to give a rapid and thorough knowledge of the position of the stars in the firmament has ever before been designed or published."—Weekly Times.
The Stars
By Simon Newcomb
Retired Professor U. S. Navy
8vo. With Photogravure Frontispiece and 28 other lllustrations. No, 9 in the Science Series. (By mail, $2.20)
Net, $2.00
"The work is a thoroughly scientific treatise on stars. The name of the author is a sufficient guarantee of scholarly and accurate work."—Scientific American.
G. P. PUTNAM'S SONS
