A Comparison of the Morphology and. the Life 

 Cycle of the Genus Gri thidia with that of 

 the crithidial stages of Tryanosoma. 



Irene Agnes Lie Cul loch, A. B. , L. A. 

 Un i v e r s i ty of Y. an s as , 1 9 1 o . 



A thesis submitted in partial fulfillment, c 



.s for the degree of Doctor of Philosophy 



-Committee : 



