The 2:lO Trotters 85 



sires when part begin at an early age and 

 part not until after they have retired from 

 the track. The production of 2 : 10 trotters 

 reverses the natural order. For stallions, 

 the sires with records are much younger than 

 the sires without records. 



Sires of 2 : 10 Stallions 



45 Sires with records average age: 9.8 years 



13 Sires without records average age: 13.6 years 



58 Sires of Stallions average age: 10.71 years 



A tabulation of 1000 cases, made from the 

 Trotting Register, shows that the ages of sires 

 of horses born between 1823 and 1890 ranged 

 from 3 to 27 years, and that the average age 

 was 10.43 years. The striking thing about 

 the above table is the fact that one group 

 of sires falls below this average while the 

 other group is considerably above it. As 

 age means time, and time is a factor of 

 energy and not of anything else, any varia- 

 tion, other than a mere accidental one, in the 

 average age of a group of sires from the 

 normal average, has reference solely to work 

 performed by those sires before reproduction. 



