INHERITANCE, FERTILITY, AND THE 

 DOMINANCE OF SEX AND COLOR 

 IN HYBRIDS OF WILD SPECIES '^"i"' 

 OF PIGEONS 



POSTHUMOUS WORKS OF CHARLES OTIS WHITMAN 



EDITED BY 



OSCAR RIDDLE 



RESEARCH ASSOCIATE OF THE CARNEGIE INSTITUTION OF WASHINGTON 



VOLUME II 



PUBLISHED BY 



THE CARNEGIE INSTITUTION OF WASHINGTON 



WASHINGTON, 1919 



