THE SKELETON OF THE DOG. POSTERIOR LIMB. 413 



The shaft of the tibia ossifies from one centre, the distal end 

 from a second, and the proximal end from two more. 



The fibula (tig. 79, C) is a distinct but very slender bone, 

 somewhat expanded at both ends. It lies external to the 



FIG. 80. A, BIGHT MANUS, B, RIGHT PBS OF A DOG (Cams fami 

 liaris)x% (after VON ZITTEL). 



1. bone representing the fused 



scaphoid, lunar and cen- 

 trale. 



2. cuneiform. 



3. trapezium. 



4. trapezoid. 



5. magnum. 



6. unciform. 



7. pisiform. 



9. fifth metacarpal. 

 10. astragalus, 

 calcaneum. 

 navicular. 

 middle cuneiform, 

 external cuneiform, 

 cuboid, 

 first metatarsal. 



11. 



12. 

 13. 

 14. 

 15. 

 16. 



8. first metacarpal. 



The digits are numbered with 

 Eoman numerals. 



