16 



BUIXETIN 1196, U. S. DEPARTMENT OF AGRICULTURE. 



successful at Presque Isle were much less effective at the New York 

 Botanical Garden, evidently due to the differences in blooming and 

 abscission. 



Table 2.— Typical results for varieties of potatoes classed as A and B vith respect to 

 ability to produce fruit, crossed uith varieties placed in classes 1, 2, and 3, respectively, 

 tvith regard to the quality of their pollen. 



