MAMMALIA. 



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Dnnected with the hoof, and terminates on these and the villous part of the sole and 

 the ligaments of the joint. The deep palmar gives some filaments to the ligaments, 

 and divides into two principal branches ; one to pass on the inner side to give filaments 

 to the joints, the periosteum, and ligaments, and communicate with the branches of the 

 median sent to the skin and ligaments at the inner side of the foot ; the other to give 



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filaments to the periosteum and ligaments, and communicate with branches of the 

 ilnar, having a similar destination on the outer side. The spiral arises from the sixth 

 id seventh cervical and first dorsal nerves ; after supplying the heads of the triceps, 

 passes round the humerus and gives branches to the two large extensors at the back 

 the fore-arm, and sends a branch somewhat expanded down to the carpal joints, but 

 not like the ganglion in man ; it then pierces the rudiment of the short supinator, to 

 supply a muscle analogous to the long supinator on the outer side of the back of the 

 fore-arm. 



In the pig the median in the fore-arm is much larger than the ulnar, it receives a 

 small communicating branch from the ulnar near the wrist, and then supplies the inner 

 small toe, both sides of the first large toe, and the inner side of the second ; the ulnar 

 gives off the dorsal branch, and then sends the deep palmar to the interosseus muscles ; 

 it sends the small branch to communicate with the median, and then supplies the 

 outer side of the second large toe and the adjoining small one. A branch from the 

 deep branch of the ulnar passes between the outer large and small toe, and communi- 

 cates with the dorsal branch of the ulnar, and is then distributed on the ulnar side of 

 the back of the outer large toe and the adjoining small one. The greatest portion 

 of the dorsum of the foot is furnished by the radial branch of the spiral and the rest by 

 the dorsal branch of the ulnar. The spiral, from between the internal brachial muscle 

 and the long supinator of the radius, sends off the radial branch for the back of the 

 hand ; it also sends off a smaller branch, which soon joins the radial branch. This 

 smaller branch corresponds with the posterior cutaneous in man. The radial branch 

 communicates with the external cutaneous branch of the musculo-cutaneous near the 

 wrist ; it then supplies the radial side of the outer large toe, both sides of the inner 

 large toe, and the adjoining small one. The musculo-cutaneous nerve supplies and 



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