OF THE MUSCLES, 117 



sheath, as far forward as the last lumbar veitebrse ; and are 

 inserted into all subsequent bones, even to the last coccygis. 

 Other muscles, belonging to particular parts, will be found 

 mingled with the description of such structures. 



DESCRIPTION OF PLATE III. 



THE SUPERFICIAL LAYER OF MUSCLES, TAKEN FROM THE BODY 

 OF THE HORSE, SO AS TO EXPOSE THOSE MUSCLES WHICH ARE 

 MORE DEEPLY SEATED. 



THE HEAD AND NECK. 



a, the buccinator ; b, the caninus ; c, the retractor labii 

 inferioris. 



1, 1, the orbicularis oris; 2, 2, 2, the complexus major; 

 3, 3, the trachelo mastoideus ; 4, 4, the subscapulo hyoi- 

 deus ; 5, the sterno maxillaris ; 6, 6, the sterno thyro 

 hyoideus ; 7, the jugular vein ; 8, the carotid artery, with 

 the eighth pair, and sympathetic nerves ; 9, the trachea ; 

 10, the scalenus. 



THE FORE LIMBS. 



1, the scapulo ulnarius ; 2, the caput magnum of the 

 triceps extensor brachii ; 3, the caput medium of the same 

 muscle ; 4, the anconeus ; 5, the flexor brachii ; 6, the ex- 

 tensor metacarpi ; 7, the extensor pedis ; 8, the extensor 

 metacarpi obliquus ; 9, the extensor suffraginis ; 10, the 

 flexor metacarpi externus ; 1 1 , the perforans and perforatus ; 

 12, the ulnarius accessorius ; 13, the flexor metacarpi in- 

 ternus ; 14, the flexor metacarpi medius ; 15, the perforans 

 and perforatus ; 16, the extensor metacarpi. 



THE TRUNK AND BACK. 



A, the scapula ; F, F, the longissimus dorsi ; G, the 

 spinalis dorsi ; a, a, a, a, a, a, a, a, a, a, a, the intercostals ; 

 b, b, b, b, b, b, b, b, b, the superficialis costarum ; c, c, c, c, c, 

 the rectus abdominis ; d, d, d, d, the transversalis abdominis ; 

 e, e, e, the obliquus internus abdominis ; /, the hollow in 

 the longissimus dorsi, which part of the gluteus maximus 

 once filled. 



HAUNCH AND HIND EXTREMITY. 



C, the ilium ; D, the ischium ; E, the tibia ; 1 , the sacro 



