ANNUAL 



O F 



SCIENTIFIC DISCOVERY: 



O R, 



YEAR-BOOK OF TACTS IN SCIENCE AND ART 



FOR 1863. 



EXHIBITING THE 



MOST IMPORTANT DISCOVERIES AND IMPROVEMENTS 



I N 



MECHANICS, USEFUL ARTS, NATURAL PHILOSOPHY, CHEMISTRY, 



ASTRONOMY, GEOLOGY, ZOOLOGY, BOTANY, MINERALOGY, 



METEOROLOGY, GEOGRAPHY, ANTIQUITIES, ETC. 



TOGETHEB WITH 



NOTES ON THE PROGRESS OF SCIENCE DURING THE YEAR 1861 ; A LIST 



OF RECENT SCIENTIFIC PUBLICATIONS; OBITUARIES OF 



EMINENT SCIENTIFIC MEN, ETC. 



EDITED B Y 



DAVID A. AVELLS, A.M., 



AUTHOR OF PRINCIPLES OP NATURAL PHILOSOPHT, PRINCIPLES OP CHEMISTRY, 



SCIENCE OP COMMON THINGS, ETC. 



BOSTON: 



O IT L D AND LINCOLN, 



50 WASHINGTON STREET. 



NEW YORK: SHELDON AND COMPANY. 



CINCINNATI: GEORGE S. BLANCHARD. 



LONDON: TRUBNER & CO. 



1862. 



