36 



TYPES AND BREEDS 



6. Massiveness, which suggests heavy muscling with the 

 thick, bulky power variety ; therefore, a horse cannot be draf ty 

 without being massive. 



7. Bone. The muscles operate the bone levers by contracting 

 upon them through a fixed point and a movable insertion. For 

 that rcasrin the resisting power of tlie bone must be proportionate 



Fig. 32. 



-TliG draft type, showing the weight, the low, wide, compact, massive form, the 

 bone and the muscling which characterize the horse of power. 



to the contracting force of the miisele. Horses have been known 

 to fracture their own bones by the power of muscular contraction. 

 Furthermore, a horse has the appearance of being unbalanced in 

 his makeup if too fine in his underpinning. Hence the demand 

 for heavy bone in draft horses is fully warranted, but should 

 be made with a full knowledge of just •«'hat it means. The 

 region of the canon, usually regarded as the index of bone, in- 

 cludes, in addition to the canon bone proper and the two rudi- 



