ANNUAL 



O F 



SCIENTIFIC DISCOVERY: 



O R, 



YEAR-BOOK OF FACTS IN SCIENCE AND ART 



FOR I860. 



EXHIBITING THE 



- MOST IMPORTANT DISCOVERIES ASD UPEflVEHHTS 



IN 



MECHANICS, USEFUL ARTS, NATURAL PHILOSOPHY, CHEMISTRY, 



ASTRONOMY, GEOLOGY, ZOOLOGY, BOTANY, MINERALOGY, 



METEOROLOGY, GEOGRAPHY, ANTIQUITIES, ETC. 







TOGETHER WITH 



NOTES ON THE PROGRESS OF SCIENCE DURING THE YEAR 1850; A LIST 



OF RECENT SCIENTIFIC PUBLICATIONS; OBITUARIES OF 



EMINENT SCIENTIFIC MEN, ETC. 



EDITED BY 



DAVID A. WELLS, A.M., 



AUTHOR OF PRINCIPLES OP NATURAL PHILOSOPHY. PRINCIPLES OP CHEMISTRY, 



SCIENCE OF COMMON THINGS, ETC. 



BOSTON: 



GO IT I, D AND LINCOLN, 



59 -WASHINGTON STREET. 



NEW YORK: SHELDON AND COMPANY. 



CINCINNATI : GEORGE S. BLANCHARD. 



LONDON: TRUBNER & CO. 



1860. 



