THE ANNUAL 



OF 



SCIENTIFIC DISCOVERY 



OR, 



YEAR-BOOK OF 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. 



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, ETC. 



EDITED BY 



DAVID A. WELLS, 



OP THE LAWRENCE SCIENTIFIC SCHOOL, CAMBRIDGE, 



AND 



GEORGE BLISS, JR. 



BOSTON: 



GOULD, KENDALL, AND LINCOLN, 

 59 WASHINGTON STREET. 



1850. 



