NATURAL SCIENCE. 97 



Young's General Astronomy. 



A Text-book for colleges and technical schools. By CHARLES A. YOUNG, 

 Ph.D., LL.D., Professor of Astronomy in the College of New Jersey, and 

 author of The Sun t etc. 8vo. viii + 551 pages. Half-morocco. Illustrated 

 with over 250 cuts and diagrams, and supplemented with the necessary 

 tables. Introduction Price, $2.25. Allowance for an old book in ex- 

 change, 40 cents. 



rpHE object of the author has been twofold. First and chiefly, 

 to make a book adapted for use in the college class-room ; and, 

 secondly, to make one valuable as a permanent storehouse and 

 directory of information for the student's use after he has finished 

 his prescribed course. 



The method of treatment corresponds with the object of the 

 book. Truth, accuracy, and order have been aimed at first, with 

 clearness and freedom from ambiguity. 



In amount, the work has been adjusted as closely as possible to 

 the prevailing courses of study in our colleges. The fine print 

 may be omitted from the regular lessons and used as collateral 

 reading. It is important to anything like a complete view of 

 the subject, but not essential to a course. Some entire chapters 

 can be omitted, if necessary. 



New topics, as indicated above, have received a full share of 

 attention, and while the book makes no claims to novelty, the 

 name of the author is a guarantee of much originality both of 

 matter and manner. 



The book will be found especially well adapted for high school 

 and academy teachers who desire a work for reference in supple- 

 menting their brief courses. The illustrations are mostly new, and 

 prepared expressly for this work. The tables in the appendix are 

 from the latest and most trustworthy sources. A very full and 

 carefully prepared index will be found at the end. 



The eminence of Professor Young as an original investigator 

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

 instructor of college classes, and his scrupulous care in pre- 

 paring this volume, led the publishers to present the work with 

 the highest confidence ; and this confidence has been fully justified 

 by the event. More than one hundred colleges adopted the work 

 within a year from its publication. 



