PLATE XX. 



One-fourth natural size. 



Fig. 1. Antero-radial surface of the left ulna. 



Fig. 2. Proximal end of the ulna. 



Fig. 3. Distal end of the ulna. 



Fig. 4. Anterior surface of the left radius. 



Fig. 5. Proximal end of the radius. 



Rg. '!. Distal end of the radius. 



