180 SCIENTIFIC HOKSESHOEING. 



week or more. If any callous remains, paint the surface with 

 iodine until it disappears. 



Bone Spavin. — This disease takes its name from an en- 

 laro;ement of the inner side of the hock, creating a bony ex- 

 crescence about the hock joint and resulting oftentimes in 

 lameness. It can not be treated with uniform success, for it 

 often proves very obstinate and not infrequently incurable. 



I would invariably recommend that the affected horse, after 

 being shod, be 'placed under a most skillful and experienced 

 veterinary surgeon. In many instances, special shoeing alone 

 will relieve the trouble. The shoe I have found to be the most 

 satisfactory and disposed to give ease and comfort is the four- 

 calked hind-foot shoe (p. 249, Fig. 145). It is obvious there 

 can not be two cases of spavin similar. A four-calked hind- 

 foot shoe, therefore, designed for any one case, will not be 

 effective in another. Every case must have its own diagnosis, 

 and thereupon the paring of the foot and the making and set- 

 tino- of the shoe must be determined, bearing in mind always 

 the balancing of the foot. But, as I say above, the shoe most 

 satisfactory all around, to give ease and comfort, is the four- 

 calked hind-foot shoe, as above described, with the toe and heel 

 calkins placed to suit the case in hand. I very often have found 

 it advisable to place the inside toe calkin back from the center 

 of toe of shoe fully three-quarters to an inch farther than the 

 outside toe calkin, making the inside toe calkin one-quarter of 

 an inch lower and the outside toe calkin one-quarter of an inch 

 higher. Bevel the front toe calkins as shown in diagram above 

 mentioned, so as to allow the toe to roll over more easily in the 

 forward movement. Having the outside. heel and toe calkins 

 higher than the inside heel and toe calkins will cause the weight 

 to fall upon the outside of the hock joint, and in many cases 

 the result will be surprising. 



