TEXT-BOOKS ON ASTRONOMY 



By CHARLES A. YOUNG 



Professor Emeritus of Astronomy in Princeton University 



LESSONS IN ASTRONOMY. (Revised Edition.) Including Star Maps. 

 420 pages. Illustrated. List price, $1.25 ; mailing price, $1.40. 



ELEMENTS OF ASTRONOMY. With a Uranography. 464 + 42 pages 



and four double-paga star maps. List price, $1.60 ; mailing price, $1.75. 



URANOGRAPHY. From the "Elements of Astronomy." Flexible covers. 42 pages 



and four double-page star maps. List price, 30 cents ; mailing price, 35 cents. 



MANUAL OF ASTRONOMY. 611 pages. Illustrated. List price, $2.25 ; 

 mailing price, $2.45. 



GENERAL ASTRONOMY. A text-book for colleges and scientific schools. 

 630 pages. Illustrated with 250 cuts and diagrams and supplemented with 

 the necessary tables. List price, $2.75 ; mailing price, $3.00. 



A SERIES of text-books on astronomy for higher schools, 

 academies, and colleges, prepared by one of the most dis- 

 tinguished astronomers of the world, a popular lecturer and 

 a successful teacher. 



The " Lessons in Astronomy " was prepared for schools that 

 desire a brief course free from mathematics. The book is fully 

 down to date, and several beautiful plates of astronomical objects 

 and instruments have been inserted in the revised edition. 



The " Elements of Astronomy " is a text-book for advanced 

 high schools, seminaries, and brief courses in colleges generally. 

 Special attention has been paid to making all statements accurate. 



The " Manual of Astronomy " is a new work prepared in response 

 to a pressing demand for a class-room text-book intermediate be- 

 tween the author's " General Astronomy " and his " Elements of 

 Astronomy." It is largely made up of material drawn from the 

 earlier books, but rearranged, rewritten when necessary, and added 

 to in order to suit it to its purpose and to bring it thoroughly 

 down to date. 



The eminence of Professor Young as an original investigator in 

 astronomy, a lecturer and writer on the subject, and an instructor 

 in college classes, led the publishers to present the " General 

 Astronomy " with the highest confidence ; and this confidence has 

 been fully justified by the event. It is conceded to be the best 

 astronomical text-book of its grade. 



GINN & COMPANY PUBLISHERS 



