D. APPLETOfr & CO.'S PUBLICATIONS. 

 piONEERS OF SCIENCE IN AMERICA. 



Sketches of their Lives and Scientific Work. Edited and re- 

 vised by William Jay Youmans, M. D. With Portraits, 

 8vo. Cloth, $4.00. 

 Impelled solely by an enthusiastic love of Nature, and neither asking 

 nor receiving outside aid, these early workers opened the way and initiated 

 the movement through which American science has reached its present com- 

 manding position. This book gives some account of these men, their early 

 struggles, their scientific labors, and, whenever possible, something of their 

 personal characteristics. This information, often very difficult to obtain, has 

 been collected from a great variety of sources, with the utmost care to secure 

 accuracy. It is presented in a series of sketches, some fifty in all, each with 

 a single exception accompanied with a well-authenticated portrait. 



" Fills a place that needed filling, and is likely to be widely read." — N. Y. Sure. 



"It is certainly a useful and convenient volume, and readable too, if we judge cor- 

 rectly of the degree of accuracy of the whole by critical examination of those cases 

 in which our own knowledge enables us to form an opinion. . . .In general, it seems 

 to us that the handy volume is specially to be commended for setting in ju.st historical 

 perspective many of the earlier scientists who are neither very generally nor very well 

 known." — New York Evening Post. 



"A wonderfully interesting volume. Many a young man will find it fascinating. 

 The compilation of the book is a work well done, well worth the doing." — Philadelphia 

 Press. 



" One of the most valuable books which we have received." — Boston Advertiser. 



" A book of no little educational value. . . . An extremely valuable work of refer- 

 ence." — Boston Beacon. 



" A valuable handbook for those whose work runs on these same line 1 :, and is likely 

 to prove of lasting interest to those for whom l tes documents hutnai >.' are second only 

 to history in importance — nay, are a vital part of history."— Boston Transcript. 



" A biographical history of science in America, noteworthy for its completeness and 

 scope. . . . All of the sketches are excellently prepared and unusually interesting." — 

 Chicago Record. 



"One of the most valuable contributions to American literature recently made. . . . 

 The pleasing stvle in which these sketches are written, the plans taken to secure ac- 

 curacy, and the information conveyed, combine to give them great value and interest. 

 No better or more inspiring reading c mid be placed m the hands of an intelligent and 

 aspiring young man." — New York Christian Work. 



" A book whose interest and value are not for to-day or to-morrow, but for indefinite 

 time." — Rochester Herald. 



" It is difficult to imagine a reader of ordinary intelligence who would not be enter- 

 tained by the book. . , . Conciseness, exactness, urbanity of tnne, and interestingness 

 are the four qualities which chiefly impress the reader of these sketches." — Buffalo 

 Express. 



"Full of interesting and valuable matter." — The Churchman. 



New York : D. APPLETON & CO., 72 Fifth Avenue. 



