HORSESHOEING. 



25 



lar cartilage. On both tlie external and the internal aspects of 

 the lower end of the cannon are small uneven depressions in 

 which ligaments take 

 their attachment. ^^^- ^' 



The condyles of 

 the cannon articulate 

 with the OS suffra- 

 ginis (long pastern) 

 and the two sesa,- 

 moids (Figs. 3, C, 

 and 4:, B) in such a 

 manner that in. the 

 forefeet the cannon 

 m.akes an angle with q/ 

 the long pastern of 

 from one hundred 

 and thirty-five to one 

 hundred and forty 

 degrees, and in the 

 hind feet of from one 

 hundred and forty to 

 one hundred and 

 forty-five degi-ees. 



The long pastern 

 (first phalanx) (Fig. 

 4, A) is about one^third the length of the cannon ; its upper and 

 thicker end presents two condyloid cavities (a) (glenoid cavities), 

 separated by a median groove, which exactly fit the condyles 

 and ridge at the lower end of the cannon. The lower end of 

 the long pastern is smaller than the upper, and is provided with 

 two condyles, between which is a shallow groove (e). The an- 

 terior face of the bone is smooth, rounded from 'side to side, 

 and blends into the lateral borders. The posterior face is flatter, 

 and shows a clearly marked triangle to which ligaments attach. 



The two sesamoid bones (Fig. 4, B) are small, and some- 



