.A. LIST OP 
BOOKS, MATERIALS, &c., 
FOB SALE BT 
THE NATURALISTS' BUREAU. 
Always Order from tlie Last List, as Changes 
are Made in Every Issue. 
All orders for Books in the List, should be accompanied 
with the amount specified, in order to insure prompt attention. 
Remittances by Mail at the risk of the sender , unless in the 
form of a draft on New York or Boston, Post Office Money Order 
or Registered Letter. 
All Orders should be Addressed to 
GEORGE A. BATES, 
SALEM; MASS. 
§2^ If you are not interested in this Book , please pass it to 
some Naturalist friend , who will thank you for it. 
( 18 ) 
