' 



* ' J J 



ON BALANTIDIUM COL I (Malmsten) AND BALANTIDIUM St 

 WITH AN ACCOUNT OF THE i NEUROMOTOR APPARj 



by 



J.Daley McDonald 



- - 



Submitted in partial fulfillment of the requir* 

 for the degree of Doctor of Philosophy 



Is Approved : ci-fr^ Pasadena, California 



