CONTENTS. 
Description of a new Species of Cypcelus, from the Co- 
lumbia River. By John K. Townsend, - 
Description of a new Species of Sylvia, from the Columbia 
River. By John K. Townsend, . 
An Analysis of Marl, from New Jersey. Bv S. S 
Haldeman, . 
List of Birds inhabiting the region of the Rocky Moun- 
tains, the Territory of the Oregon, and the North 
West Coast of America. By John K. Townsend, 
Note on Sylvia Tolmoei. By John K. Townsend, - 
Description of the White-winged Tanager, (Pyranga leu- 
coptera.) By J. Trudeau, .... 
Description of a Species of Land Tortoise, from Africa 
By Edward Hallowed, M. D, - 
148 
149 
150 
151 
159 
160 
161 
