PUBLISHERS' ADVERTISEMENT. 



THE 



ANNUAL OF SCIENTIFIC DISCOVERT: 



OR, 



TEAR-BOOK OP FACTS IN SCIENCE AND ART, 



EXHIBITING THE 



MOST IMPORTANT DISCOVERIES AND IMPROVEMENTS IN 



MECHANICS, ASTRONOMY, MINERALOGY, 



USEFUL ARTS, METEOROLOGY, GEOLOGY, 



NATURAL PHILOSOPHY, ZOOLOGY, GEOGRAPHY, 



CHEMISTRY, BOTANY, ANTIQUITIES, &c. 



Together with a List of recent Scientific Publications ; a Classified List 



of Patents ; Obituaries of Eminent Scientific Men ; an Index 



of important Papers in Scientific Journals, Reports, &c. 



EDITED E Y 



DAVID A. WELLS, 



OP THE LAWRENCE SCIENTIFIC SCHOOL, CAMBRIDGE, 

 AND 



GEORGE BLISS, JR. 



PROSPECTUS. 



THE ANNUAL OF SCIENTIFIC DISCOVERY is designed for all those 

 who desire to keep pace with the advancement of Science and Art. 

 The great and daily increasing number of discoveries in the different 

 departments of science is such, and the announcement of them is scat- 

 tered through such a multitude of secular and scientific publications, 

 that it is very difficult for any one to obtain a satisfactory survey of 

 them, even had he access to all these publications. But the Scientific 

 Journals, especially those of Europe, besides being many of them in 

 foreign languages, have a very limited circulation in this country, and 

 are therefore accessible to but very few. It is evident, then, that an 

 annual publication, giving a complete and condensed view of the 

 progress of discovery in every branch of Science and Art, being, in 

 fact, the Spirit of the Scientific Journals of the year, systematically 

 arranged, so as to present at one view all the new discoveries, useful 

 inventions, and improved processes of the past year, must be a most 

 acceptable volume to every one, and greatly facilitate the diffusion of 



