THE FOOT OF THE HOKSE. 



55 



Fig. 8. internal structures of the region of 

 the left fore-foot as seen from the outer side. 



A, Lateral cartilage of the coffin-bone. 



B, Reticulum, enveloping the coffin-bone, sus- 

 taining the blood-vessels and laminal tissues of 

 this region. 



C, Tendon of the front extensor of the foot to 

 its insertion on eminence of coffin-bone. 



D, Terminal of the side extensor of the foot. 



E, Rear face of the sesamoid branch of the 

 transverse ligament. 



P, Periosteum membrane, covering the surfaces 

 of the cannon and pastern bones. 



These plates represent the arteries in red, the veins in blue, 

 and the nerves in white. Each of these systems maintains the 

 most intimate relations with the others and meets in the extremi- 

 ties in various forms of branches, collaterals, and ganglionic en- 

 largements, remarkable alike for their large volume, intricate 

 reticulation and extreme delicacy. 



The divisions shown in this plate are the digital and ungual 

 arteries and veins of the plantar region, the veins of the coro- 

 nary plexus, and the median circumflex artery of the foot to- 

 gether with the digital branches of the median or cubic plantar 

 nerve. 



