MAY, 1853. : | No. 45. 
the first day of every second month, price $5 per year. | 
SCIENCE AND ARTS. 
CONDUCTED BY 
Rorrssors B. SILEUEAN, B. SILLIMAN, Jr., 
JAMES Dz DANA. 
AIDED BY 
bas WOLCOTT GIBBS, or New Yors, 
IN PHYSICS AND CHEMISTRY, 
AND : 
Pror. ASA GRAY, or CAMBRIDGE, Se 
IN BOTANY. CES 
SECOND/SERIES. 
No. 45.—MAY, 1853. 
WITH TWO PLATES. 
NEW HAVEN: 
PUBLISHED BY THE EDITORS. 
FOR AGENTS ADDRESSES, SEE NEXT hae 
hapkcpee eee 
