146 



SKELETON OF THE OX 



The spine is sinuous, bent backward in its middle, forward below. Its free border 

 is somewhat thickened in its middle, but bears no distinct tuber. Instead of sub- 

 siding below as in the horse, the spine becomes a little more prominent, and is pro- 

 longed by a pointed projection, the acromion, from which part of the deltoid muscle 

 arises. The subscapular fossa is shallow. The areas for the attachment of the 

 serratus muscle are not very distinct. The nutrient foramen is usually in the 

 lower third of the posterior border. The glenoid cavity is almost circular and 

 without any distinct notch. The tuberosity is small and close to the glenoid cavity. 



Fig. 144. — Left Scapula of Ox; Lateral View. 



1, Anterior angle; 2, posterior angle; 3, supraspinous fossa; 4, infraspinous fossa; .5, anterior border; 6, posterior 



border; 7, spine; S, acromion; 9, tuber scapulse; 10, glenoid cavity; 11, nutrient foramen. 



The coracoid process is short and rounded. The cartilage resembles that of 

 the horse. The tuberosity unites with the rest of the bone at seven to ten months. 

 The humerus has a shallow musculo-spiral groove. The deltoid tuberosity 

 is less prominent than in the horse, and the curved line running from it to the neck 

 bears a well-marked tubercle on its upper part. The nutrient foramen is usually 

 in the distal third of the posterior surface. The lateral tuberosity is very large, 

 and rises an inch or more (ea. 3 cm.) above the level of the head. Its anterior part 

 curves medially over the intertuberal or bicipital groove, and below it laterally 

 there is a prominent circular rough area for the insertion of the tendon of the infra- 

 spinatus. The anterior part of the medial tuberosity has a small projection which 



