82 AYES. 



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 then passes close to the interosseous ligament to the skin and 

 other parts of the back of the pinion. In the pelican a similar branch is traced to the 

 back of the pinion ; it there divides 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. In the swan the external cutaneous nerve arises 

 from the median, and descends to supply the skin on the outer side of the fore-arm. 

 The ulnar is a branch from the median ; 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 on 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. In the swan the 

 median 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. In the pinion of the swan, very distinct little muscles are 

 observed for giving motion to the quills, and thus form a variety of the cutaneous 

 muscle. The dorsal nerves, after giving filaments to the intercostal muscles and the 

 rudiment of the diaphragm, pass to the skin of the side. In the pelican several of the 

 intercostal nerves, after they have passed from between the ribs, are formed into a 

 plexus near the wing, before their final distribution on the skin. The lumbar and 

 some of the sacral form the nerves of the lower extremity, and the rest to the 



