ICONOGRAPHIC 
ENCYCLOPADIA 
OF 
SCIENCE, LITERATURE, AND ART. 
SYSTEMATICALLY ARRANGED 
BY 
J. Go HECK. 
TRANSLATED FROM THE GERMAN, WITH ADDITIONS, 
AND EDITED BY 
SPENCER F. BAIRD, A.M., M.D. 
PROFESSOR OF NATURAL SCIENCES IN DICKINSON COLLEGE, CARLISLE, PA. 
ILLUSTRATED BY FIVE HUNDRED STEEL PLATES, 
CONTAINING UPWARDS OF TWELVE THOUSAND ENGRAVINGS. 
IN FOUR VOLUMES. 
Woes, di 
MATHEMATICS AND ASTRONOMY, 
PHYSICS AND METEOROLOGY, CHEMISTRY, MINERALOGY, 
GEOGNOSY AND GEOLOGY. 
NEW YORK: 1852. 
RUDOLPH GARRIGUE, PUBLISHER, 
2 BARCLAY STREET (ASTOR HOUSE). 
