PLATE XI. 



This plate represents the cartilaginous, tendonous, and ligament- 

 ous apjjaratus of the digital region seen sidewise (anterior limb). 

 The third phalanx is represented in the interior of the horny box, 

 opened laterally, in order to show its proportions of dimension, with 

 the cartilaginous apparatus which project from it behind. 



A A Lateral cut (or section) of the horny box, or hoof. 



B Basilar process. 



b Posterior extremity of the cartilage in the interior of the angle of in- 

 flection of the hoof. 



C External face of the cartilage. 



D Vascular ajjerture on the surface of the cartilage at the level of the 

 point of reunion of the cartilage and bone. 



F Superior border of the cartilage. 



Gr Anterior lateral ligament, bordering the cartilage in front. 



H Retrossal process. 



I Extensor tendon of the third phalanx at its insertion at the pyramidal 

 eminence. 



J Posterior border of the cartilage. 



K Lateral branches uniting the tendon of the extensor of the phalanges 

 with the branches of the suspensor ligaments of the fetlock at K'. 



Q Portion of the fibrous envelojiing sheath of the flexor tendons of the 

 jihalanges. This sheath has been reduced in this manner by dissec- 

 tion, to show the disposition of the tendons under. 



R Lateral branches of the strengthening sheath of the perforans tendon. 



T Perforans tendon at the point it disappears under its proper sheath. 



V Strengthening sheath of the j^erforans tendon seen above the superior 

 border of the cartilage. 



X Insertion to the third phalanx, of the lateral bands of the strengthening 

 sheath. 



Z Insertion of the lateral extensor to the first phalanx. 



