56 Dynamic Evolution 



ing to what was the early activity of the 

 dam. 



These two steps usually tell the story with 

 a fair degree of certainty, but they are not 

 conclusive, as conditions may exist in which 

 all of these animals are neutral, or so nearly 

 neutral that it would be impossible to deter- 

 mine the facts. We therefore take the third 

 step by examining the great-grandparents. 

 The paternal grandsire's dam stands on the 

 same footing as the dam and the sire's dam, 

 and the maternal granddam's sire on the 

 same footing as the sire and the dam's sire. 

 The other great-grandsires and great-grand- 

 dams have the same standing as the sire's 

 sire and the dam's dam. 



As three generations of ancestors of our 

 2 : io trotters take us back to a time when 

 there was no horse in the world with energy 

 enough to trot a mile in 2 : io, an examina- 

 tion extended thus far in detail, and with 

 the care and particularity indicated, is con- 

 clusive in determining whether energy 

 came into these horses in accordance with 



