THE S * wt 
AMERICAN JOURNAL 
a til 
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. WALDO I. BURNETT, or BOSTON, | 
DR. WOLCOTT GIBBS, or NEW YORK. | 
SECOND SERIES. 
VOL. XVII.—MAY, 1854. 
Printed by B. L. Hamten—Printer to Yale Goll 
‘ae 
