128 



FARM ARITHMETIC. 



form to the standard. Draft horses often are slightly 

 higher at the withers than at the croup; and horses for 

 speed are often higher at the croup than at the withers ; 

 also the length of the body may be greater than the 

 height at croup or at withers. This variation is much 

 less, however, than one would suppose. Draft is favored 



o^ 



Hackney, Typical of the HARNhas Class. 



when the height at withers is slightly greater (one or two 

 inches) than at croup, while speed is favored when there 

 is a slightly greater height at the croup. 



Line of gravitation. The center of gravity in the 

 horse is the point about which all the parts are exactly 

 balanced. If the horse could be supported at this point, 



