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. 
Fie. 144. 
Lerr Scapuna oF Ox; LATERAL VIEW. 
1, Anterior angle; 2, posterior angle; 3, supraspinous fossa; 4, infraspinous fossa; 5, anterior border; 6, posterior 
border; 7, spine; 8, acromion; 9, tuber scapule; 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 (ca. 3 em.) 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 — 
