THE HORSE 



61 



a short distance oif, to one side of the horse, and 

 square with the suspected leg. As the accom- 

 panying diagram will show, the horse's hock is 

 composed of a number of bones (usually six), and 

 a broad ligament, not shown in the diagram, fills 



Fig. 26.--Diagram of the Inner Side 

 of the Oflf Hook. 



1, astragalus ; 2, os calcis ; 3, large cuneiform ; 

 4, median cuneiform ; 5, small cuneiform ; 6, splint 

 bone ; 7, cannon bone ; 8, tibia ; 9, position of bone 

 spavin; 10, seat of bog spavin ; 11, seat of thorough- 

 pin ; 12, capped hocli ; 13. seat of curb ; 14, perfo- 

 ratus tendon ; 15, space filled by ligament, injury 

 to which causes curb. 



