THE EARLY EMBRYOLOGY 



OF 



THE CHICK 



BY 



BRADLEY M. PATTEN 



ASSISTANT PROFESSOR OF HISTO^dGY AND EMBRYOLOGY 

 SCHOOL OF MEDICINE, WESTERN RESERVE UNIVERSITY 



WITH 55 ILLUSTRATIONS CONTAINING 

 182 FIGURES 





PHILADELPHIA 



P. BLAKISTON'S SON & CO 



1012 WALNUT STREET 



