



NOVEMBER, 1854. No. 54. 

THE 
or , 
CONDUCTED BY 
PROFESSORS B. SILLIMAN, B. SILLIMAN, Jn, 
AND ; 
JAMES D. DANA, 



IN CONNECTION WITH 
“PROF. ASA GRAY, or CAMBRIDGE, 




SECOND SERIES. 
_ No. 54.—NOVEMBER, 1854. 
WITH BEVEN PLATES. 


