SB 



211 



UC-NRLF 



A Study, by the Crop Survey Method, of 



"Factors Influeneing the Yield 

 - ; , of Potatoes 



A THESIS 



PRESENTED TO THE FACULTY OF THE GRADUATE SCHOOL OF 



CORNELL UNIVERSITY FOR THE DEGREE OF 



'DOCTOR OF PHILOSOPHY 



BY 



EARLE VOLCARTIHARDENBURG 



Published as Memoir 57 

 Cornell University Agricultural Experiment Station, June 1922. 



