ie 76111 
Vou. IX. MARCH, 1850. pee No. 26. 
Published the first day of every second month, price $5 per year. 
SCIENCE AND ARTS. 
CONDUCTED BY 
_Prorrssors B. SILLIMAN anv B. SILLIMAN, Jr., 
AND 
JAMES D. DANA. 
SECOND SERIES. 
1850. 
No. 26.—MARCH, 
— 
NEW HAVEN: 
PRINTED FOR THE EDITORS BY B. L. “HAMLEN, 
Printer te Yale College. 
ROWN, and Peuuias & Co., Boston — 
roroE P. PurnaM, a ee ey & 
: DEEN, "Putnam's American Agency, w Lane, Cheap- 
3A nor & | rs Paris—Nesrusn & Meuiz, Hamiurgh. 
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