ERRATUM, For ZOOLOGIA, read: 



ZOOLOGICA 



Abbreviation : 



Zoologica: N. Y. Zool Soc. 



VOLUME I, NUMBER 1 



GEOGRAPHIC VARIATION IN BIRDS 



WITH ESPECIAL REFERENCE TO 



THE EFFECTS OF HUMIDITY 



By C. William Beebe 



Curator of Birds 



PUBLISHED BY THE SOCIETY 

 THE ZOOLOGICAL PARK, NEW YORK 



September 25, 1907 



