^be TIlniv^r^itTg of Cbicaao 



' FOUNDED BY JOHN D. ROCKBFEW-ER 



THE FERTILIZATION AND EARLY DEVELOPMENT 

 OF THE PI6[E0N'S EGG 



. A DISSERTATION 



SUBMITTSD TQ THE EACtlLTIBS OF THE GRADUATE SCHOOLS OP ARTS, 

 LiTEKATTTEE, AND SCIENCE, IN CANDIDACY FOK THE " 

 DEGHEE OF DOCTOB OF PHlIiOSOfHY , 



ZOOLOGY 



BY 



EUGENE HOWARD HARPER 



CHICAGO 

 t902 



