THE SKELETON OF THE DOG. ANTERIOR LIMB. 407 



on its inner side a concave surface (fig. 77, 12) for articulation 

 with the trochlea. The pointed proximal end of the sigmoid 



FIG. 77. BONES OF THE LEFT UPPER ABM AND FOKE-ABM OF A DOG 



{ Cam's familiaris) x \. 



A, humerus (seen from the posterior side) ; B, radius, C, ulna, both seen 

 from the anterior side. 



1. head. 9. proximal end of the radius. 



2. lesser tuberosityJP 4W- ' 10. 



3. greater tuberosity. 11. 



4. shaft of the humerus. 12. 



5. trochlea. 



6. internal condyle. 13. 



7. external condyle. 



8. supra-trochlear foramen. 



14. 



shaft of the radius. 



olecranon. 



surface for articulation with 



the trochlea. 

 surface for articulation with 



the radius, 

 distal end of the ulna. 



