$6 ON THE ANATOMY OF THE 



muscles are traced upwards, we find that they unite 

 just above the spine of the first cervical vertebra, 

 and continue in union to where they originate in 

 the occipital bone. The complexus and sacro-lum- 

 balis, with all the subdivisions enumerated by ana- 

 tomists, are precisely as in man. Tyson says, that 

 the inter spinales colli were wanting in his speci- 

 men ; but we found in ours distinct interspinales 

 colli, dorsi et lumborum, with the intertransver- 

 sales of the neck, back and loins, and the levato- 

 res cos tar um. Tyson also observes, that the qua- 

 dratus lumborum is longer in the Orang Outang 

 than in man ; but to us it appeared shorter, cor- 

 responding to the distance between the spine of 

 the ilium and the ribs, which scarcely exceeds an 

 inch. 



The recti posteriores capitis differ, in having the 

 muscles corresponding to the minores in man con- 

 siderably larger than those answering to the nia- 

 jores ; that is, they contain more muscular substance 

 though they are shorter than the latter. The re- 

 lative proportions also of the obliqui capitis in thii 

 animal are reversed, when compared to man ; for the 

 obliquus superior is at least double the size of the 

 obliquus inferior. 



Muscles of the Superior Extremity. — The del- 

 toid muscle arises from a larger portion of the sca- 

 pula than in the human subject, descending poste- 

 riorly to within an inch of its inferior angle. The 

 supra and infra spinatus, the teres minor, subcla- 



