GENERAL GUIDE 
IMO) 4S 0s7 
fe BION HALLS 
OVX IMSIE; 
AMERICAN PSN 
NATURAL “HISTORY 
BY 
FREDERIC A. LUCAS, Director 
Assisted by Members of the Museum Staff 
Y 
SCIENCE A 
p EDUCATION i 
GUIDE LEAFLET SERIES No. 47 
New York 
Published by the Museum 
January, 1918 
