

EFFECTS OF THE HYDROGEN ION CONCENTRATION AND OXYGEN 



CONTENT OF WATER UPON REGENERATION AND 



METABOLISM IN TADPOLES 



BY 



MINNA ERNESTINE JEWELL 

 M. A. University of Illinois, 1915. 



THESIS 



Submitted in Partial Fulfillment of the Requirements for the 



Degree of 

 DOCTOR OF PHILOSOPHY 

 IN ZOOLOGY 



IN 



THE GRADUATE SCHOOL 

 OF THE 



UNIVERSITY OF ILLINOIS 

 1918 



