THE 'NAVICULAR' BONE. 



41 



horny covering that surrounds it, and the limb of 

 which it forms the extremity. 



The accompanying illustrations represent a longitu- 

 dinal section of the lower portion of the horse's foot. 



Beginning as before with the bones, A is the lower 

 part of the cannon bone, or metacarpal; B is the 

 Long Pastern, c the Short Pastern, and D the Coffin 

 Bone. Another bone, shown at e, now comes before 



FRONT VIEW OF COFFIN AND BACK VIEW OP COFFIN, NAVICULAR, 

 NAVICULAR BONES. AND SHORT-PA SThRN BONES. 



us. It is quite a little one, but is of the greatest 

 importance to the hoof. Its scientific name is the 

 'Navicular' bone. The word is Latin, signifying a 

 little ship or boat, and is given to the bone because 

 it somewhat resembles a birch-bark canoe in shape. 

 The too-familiar ' navicular ' disease originates in the 

 structures surrounding this bone. Another name is 

 the ' shuttle-bone.' 



As the section on page 40 does not give any idea 



