AVE8. 



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8. Spiral nerve; it gives branches to the teres and scapular muscles; it sends 



branches to the internal brachial muscle and the extensor corresponding 

 with the triceps. In passing behind the fore-arm it gives a branch to supply 

 the skin ; at the back of the ulna it gives a branch to the radial muscle, and 

 a muscle corresponding with the short supinator, to the external ulnar, and 

 the other muscles analogous to the extensors of the wrist and fingers, 

 and is then continued close to the interosseous ligament to the skin and 

 other parts at the back of the pinion. A similar branch was traced in the 

 pelican to the back of the pinion ; it there divided into two branches, one 

 to be distributed on the skin at the edge of the thumb, the other to the 

 muscles and skin at the middle part as far as the extremity of the finger. 



9. Median nerve passing with and giving branches to the biceps muscle. 



10. External cutaneous nerve arising from the median, and descending to the skin 



on the outer side of the fore-arm. 



11. A branch of the median corresponding with the ulnar ; it passes over the inner 



condyle of the humerus, and gives filaments to the skin of this part, and to 

 the internal ulnar muscle ; it sends a branch down the fore-arm on the outer 

 side of this muscle to the skin throughout the outer edge of the pinion ; 

 another branch passes underneath, and then at the inner side of the internal 

 ulnar muscle, to terminate on the palmar face of the pinion. In the pelican 

 a branch corresponding with the last is conveyed underneath, and adhering 

 to the tendon of a similar muscle to supply the muscles and skin of the 

 palmar face of the pinion, and communicate there with a branch of the 

 median. 



12. Continuation of the median nerve ; it sends a branch under the head of one of 



the pronators of the radius and gives filaments to this muscle, and the other 

 pronator of the radius, and passes down to the skin as far as the pinion ; 

 another branch passes behind these muscles and reaches the ulnar side of the 

 inner pronator of the radius, and passes down the fore-arm to the pinion and 

 divides into two branches, to be distributed on the thumb and fore-finger. 

 In the pelican, this branch is divided in the same manner, one supplying the 

 muscles of the thumb, and skin ; the other, after communicating with the 

 ulnar, is extended along the fore-finger to the skin. 



Q 2 



