This thesis was defended publicly ,.' 



r 



By CORNELIUS LOTT SHEAR, B. S., A. M., University of 

 Nebraska, in doctorate disputation, Monday, May 28, 

 1906. 



Before FRANK H. KNOWLTON, Ph. D. 



JOHN R. MOHLER, A. M., V. M. D. 

 MERTON B. WAITE, B. S. 



Professor ALBERT MANN, Ph. D., presiding. 



