4° 



ANATOMY OF THE DOMESTIC FOWL 



Fig. II. — Bones from the scapular arch. 



A. Dorsal vertebra, i, Superior spinous ridge. ;i, Inferior spinous ridge. 3, 

 Oblique processes. 4, Intervertebral foramina. 5, Articular facette for head 

 of the rib. 6, Articular facette for tubercle of the rib. 7, Articular portion of 

 the body. 



B. Outer surface of scapula. 



C. Inner surface of scapula, i, Thin caudal end. 2, Articular head. 4, 

 Processus furcularis. 5, Processus humeralis. 6, Processus coracoideus. 



D. Outer surface of coracoid. 



E. Inner surface of coracoid. 1, The furcular tuberosity. ^, Articular facette 

 for articulation with the sternum. 3, Articular surface for humerus and scapula. 



F. Outer sujrface of humerus and G the inner surface of the same, i, Trochan- 

 teric fossa. 2, Oval articular head at proximal end. 3, Shaft. 4, Distal end 

 showing articular condyles, s. Trochanter. 6, Trochlea for ulna. 7, Trochlea 

 for radius. 8, Depression or fossa. 



H. Section through the median plane of the humerus showing the delicate 

 cross partitions illustrating provisions made for bones provided with air-sac 

 extensions. 



