The 2 : lO Trotters 95 



and a greater difference in the average ages 

 of the two groups than we found for dams of 

 stallions. It is the reversal of the normal 

 order which we would expect if energy ac- 

 quired after maturity is transmitted in 

 accordance with the laws governing the trans- 

 mission of secondary sexual characters, pro- 

 vided these dams without records were 

 animals which worked before they were bred. 

 Generally this is true. 



Of the dams without records, one was 

 second in a race where the record was 

 2 : 13K. two had unofficial records faster 

 than 2 : 30, and six had records slightly 

 slower than standard. The facts then are 

 that 18 of the dams of these 2 : 10 mares 

 were trained and raced and 39 were not raced, 

 as far as the records show. An examination 

 of the brood mare tables of the Trotting 

 Register shows 22 of these non-record dams 

 as not being the dams of anything else than 

 these 2 : 10 mares, while in the most of the 

 other cases there are few other offspring. In 

 many cases the dams are not registered in 



