APR 2 1914 



Study of the Relation of the 

 hemical Composition of Hens' Eggs 

 :o the Vitality of the Young Chick 



S-IO 



f 



A THESIS 



Presented to the Faculty of the Graduate School 



of 



Cornell University 



FOR THE 



DEGREE OF DOCTOR OF PHILOSOPHY 



BY 



LEWIS JOSEPHUS CROSS 



o* 



JUNE, 1912 



