PLATE XV. 



HUMERUS, ULNA, AND RADIUS. 



Five times natural size. 



Fig. i. Right humerus, posterior or caudal aspect. 

 Fig. 2. Right humerus, anterior or cranial aspect. 

 Fig. 3. Right radius and ulna, outer lateral aspect. 

 Fig. 4. Right ulna, anterior aspect. 

 ca., capitellum; 

 d.r., deltoid ridge; 

 e.f., epicondylar foramen; 

 g.s., greater sigmoid cavity; 

 g.t., greater tuberosity; 



h., head of humerus; 



i.a., inner articular surface of distal end of humerus; 

 *'.., inner condyle; 

 /./., lesser tuberosity; 

 ol., olecranon and fossa; 

 r., radius; 



s.r., supinator ridge; 

 tr., trochlea; 

 ., ulna. 



