* No. 61. 
Published the first day / of € every second veomthe price $5 per year. 
Vou. XXI. J ANUARY, 1856. 
a So ef 
| AMERICAN JOURNAT 
; SCIENCE AND ARTS. 
CONDUCTED BY 
PROFESSORS B. SILLIMAN, B. SILLIMAN, Jr, 
‘ AND 
JAMES D.. DANA, 
IN CONNECTION WITH 
_ PROF, ASA GRAY, or CAMBRIDGE, 
PROF. LOUIS. AGASSIZ, or CAMBRIDGE, 
DR. WoLcorr. GIBBS, or NEW YORK. 
THE PAYMENT OF THE YEAR IS RECEIVED 
en APPL eter 
i P) _ 2 
F i 
} 
Sates AR ¥, 1856. 
evra uae, 
