Effects of Two Generations 1^9 



begin by selecting stock in accordance with 

 what current opinion indicates as the best 

 "blood." 



Second, blood is commonly considered 

 through the sires, while the performers have 

 been principally geldings, and mares which 

 have never been bred. When stallions were 

 raced their development came almost ex- 

 clusively in their adult stage with the conse- 

 quence that it was sexual in character and had 

 no effect upon the racing qualities of daugh- 

 ters and gelded sons. Mares and geldings of 

 superior quality came indifferently from old 

 sires and young sires, and from sires which 

 had been raced and sires which had not been 

 raced. The sexual character of energy ac- 

 quired after sexual maturity is a most effect- 

 ual screen for concealing the facts, and the 

 existance of this screen was not suspected. 

 No one brought the facts together. 



With the advent of early training and 

 early speed this screen was automatically 

 removed without its presence being detected, 

 and at the same time horse generations were 



