680 messrSl. b. c. a. windi.i: and f. g. parsons on [Dec. 17, 



into the spine from that which ends in the root of the spine. 

 AY hen a separation is either naturally or artificially made, it is 

 found that the second part (counting the cephalo-humeral as the 

 first) rises from the posterior half or two-thirds of the ligamentum 

 nucha? and from two or three anterior thoracic spines, while the 



Text-fig. 90. 



Shoulder-muscle? of the Hyrax. (Dorsal view.) 



1. Trapezius. 



2. Supraspiuatus. 

 •">. Omo-trachelian. 

 4. Infraspinatus. 



5 & fi. Deltoid. 



7. Teres minor. 



8. Dorso-epitrochleaii'i 

 '.). Latissimus dorsi. 



10. Teres major. 

 11 & 12. Triceps. 



third or posterior part conies from a very variable number of 

 thoracic spines behind the third, usually reaching for about the 

 anterior two-thirds of the thoracic region of the vertebral column. 



