1907.] PLANT BREEDING — PRINCIPLES AND RESULTS. I29 



Sturges' Hybrid. 200 Ears Analyzed, 



5 10 15 20 25 30 35 40 45 50 55 60 65 



Hopson's Longfellow. 150 Ears Analyzed. 



5 10 15 20 25 30 35 40 45 50 55 60 65 



These are the variations from which we make our selection, 

 selecting and planting the highest, and rejecting all others. 

 It does not seem peculiar or improbable that plantings made 

 from some of the high-protein ears shown here should raise 

 the average protein content, and hence the feeding value, in 

 the next year's crop. 



This last table shows some of the actual producing powers 

 of ears which we have compared in one of our breeding plots 

 this last season (1906). 



Agr. — 9 



