IJDIES ON BACTERIUM COLI 

 1 CLOSELY RELATED FORMS 



UC-NRLF 



BY 



MAX/LEVINE 



THESIS 



Submitted in Partial Fuliillmc-iil of the Requirements 



for the I). 



DOCTOR OF PHILOSOPHY 

 IN BACTERIOLOGY 



In 



THE GRADrATE SCHOOL 



of the 



UNIVERSITY OF IOWA 

 1922 



