The 2 •. lO Trotters 91 



with the qualities of a mare or a gelding. If 

 energy acquired by work performed after 

 sexual maturity has a sexual quality, then a 

 sire which is old enough to reproduce has 

 acquired all that he can transmit to his 

 daughter or gelded son. If energy acquired 

 in the youthful stage can be dissipated in an 

 hereditary sense by idleness in the adult stage, 

 then it would seem that mares and geldings 

 of 2 : 10 quality would never be begotten by 

 old sires. The evidence indicates energy 

 acquired in the youthful stage continues 

 through the adult stage in the same way that 

 the milking qualities of a cow continues 

 through her son. 



Although the percentage of race records 

 for sires of mares and geldings is less than for 

 sires of stallions, it is more than for ordinary 

 sires of trotting stock, a fact which indicates 

 an advantage to mares and geldings to have 

 sires trained for racing purposes. An exam- 

 ination of these sires shows that the majority 

 of them were raced at two and three years of 

 age, which means still earlier training. An 



