BXORAIK 



THE RESULTS OF SELECTION WITHIN 



PURE LINES OF PESTALOZZIA 



GUEPINI DESM. 



BY 



CARL DOWNEY LA RUE 



A DISSERTATION SUBMITTED IN PARTIAL FULFILLMENT OF THE 



REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY 



AT THE UNIVERSITY OF MICHIGAN 



MAY, 1921 



Reprinted from GENETICS 7: 142-201, March, 1922 



