THE FOOT AND SHOEING. 



215 



hoof is clearly shown in figs. 41-42. It is wedged into the toe of the foot, 

 and although its sides (wings) extend some distance further back than the 

 central portion, it leaves the back half of the foot practically free from any 

 bony foundation. 



Fig. 41. — Diagram of section through centre of foot, 



1. Pedal bone. 9. Wall. 



2. Short pastern bone. 10. 



3. Long pastern bone. 11. 



4. Navicular bone. 12. 



5. Perforatus tendon. 13. 



6. Perforans tendon. 14. 



7. Extensor tendon. 15 



8. Coronary band. 



White line. 

 Fleshy leaves. 

 Fleshy sole. 

 Horny sole: 

 Fleshy frog. 

 Horny frog. 



16. Cushion of the heels. 



The navicular bone. — This small, shuttle, or boat-shaped bone is The 

 placed across the back of the central part of the coffin bone, where a navicular 

 narrow, smooth surface for it to lie against, may be seen. 



bone. 



