Zbe "Olnlversltie ot flbfcago 



FOUNDED BY JOHN D, ROCKEFELLER 



THE FERTILIZATION AND EARLY DEVELOPMENT 

 OF THE PIGEON'S EGG 



A DISSERTATION 



SUBMITTED TO THE FACULTIES OF THE GRADUATE SCHOOLS OF ARTS, 



LITERATURE, AND SCIENCE, IN CAtiTDIDACr FOR THE 



DEGREE OF DOCTOR OF PHILOSOPHY 



ZOOLOGY 



BY 

 EUGENE HOWARD HARPER 



CHICAGO 

 t902 



