Vou. XL JANUARY, 1851. 
7 te a EA RD Nh ERE t= ARIE SR ENERO OK AEN. 
SCIENCE AND ARTS. 
eats 
CONDUCTED BY 
AN 
JAMES b. DANA. 
Bee : : : : AIDED “is ee - e - . 
IN THE DEPARTMENTS OF CHEMISTRY AND PHYSICS 
: : BY See ss 5 
De. WOLCOTT GIBBS. 
SECOND SERIES. 
No, 31. :JANUARY, 1861. 
“NEW HAVEN: 
| PUBLISHED BY THE ‘EDITORS. 
