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tions to many European scientific journals, which formerly circulated very largely 

 in this country ; and have thus cut off another source of popular information. 



Under these circumstances, therefore, it will be seen that this is almost the 

 only medium in the United States through which the reports of recent scientific 

 progress, at home and abroad, are promptly rendered accessible to the public, 

 an assertion which is strikingly illustrated by the fact, that the present volume 

 contains the first detailed account, published on this side of the Atlantic, of the 

 remarkable discoveries effected during the past year, through the agency of Spec- 

 trum Analysis. 



Among other noticeable features of the present volume, is a complete resume 



% 



of the recent discoveries respecting the '* pre-historic man," and the antiquity of 

 the human race; a report of Tyndall's recent investigations in relation to light and 

 heat; photo-sculpture; Draper's speculations on the transition of matter; recent 

 improvements in war implements and constructions; on the cultivation of fish; 

 production of sexes at will ; utilization of sewage ; production of petroleum ; use 

 of steam expansively, &c. &c. 



The full Series of the Annual of Scientific Discovery now numbers sixteen vol- 

 umes. They constitute a most complete Encyclopedia of scientific and practical 

 knowledge ; and in the language of the N. Y. Times, " Condense a greater quantity 

 of sterling matter than any other set of books in the world !" The series has 

 furthermore this advantage over any Encyclopedia, inasmuch as it chronicles the 

 failures as well as the achievements in science; and a record of the first is equally 

 indispensable with the last, to all who desire to know what has been attempted or 

 speculated upon by the pioneers of invention and discovery, as well as what has 

 been realized. 



The Series contains fine eteel engravings of Professors, Agassiz, Silliman, 

 Hitchcock, Wyman, Mitchel, Joseph Henry, A. D. Bache, H. D. Rogers, Dr. A. 

 A. Gould, Isaac Lea, Esq., Richard M. Hoe, Esq., Capt. J. Ericsson, Admiral 

 Dahlgren, Gen. Gilmore, &c. 



Price per Volume, 12mo, Cloth, 1 75 



Price per complete Set, 16 Volumes, uniform style, with neat, 



substantial box, 28 00 



