A Study of the Factors Influencing 



THE 



Improvement of the Potato 



PRESENTED TO THE 



FACULTY OF THE UNIVERSITY OF ILLINOIS 



URBANA, ILLINOIS, U. S. A. 



AS A 



Thesis for the Degree of Doctor of Philosophy 



JUNE, 1907 



BY 



EDWARD MURRAY EAST, M. S. 



PUBLISHED 



BY THE UNIVERSITY OF ILLINOIS 



AGRICULTURAL EXPERIMENT STATION 



AS BULLETIN No. 127 



