54 



SCIENTIFIC HORSESHOEING. 



A, Numerous leaves of the sensi- 

 tive laminpe (podophyllous tissue) 

 formed by the reticulum covering the 

 external face of the coffin-bone, and 

 which interlock with the horny 

 leaves (keraphyllous tissue) of the 

 surrounding wall. 



B, Coronary-cushion, the organ 

 which develops the horny wall, and 

 acts in reciprocal relation between it 

 and the skin above, as an elastic 

 medium of connection. It also 

 unites in the same manner with the 

 vascular laminae, and is prolonged 

 downward at the back, into the bulbs 

 of the plantar-cushion and the villous 

 tunic of the velvety tissue. 



Fig. 7. front view of the horse's 

 foot, showing the superficial appear- 

 ance of the keratogenous membrane, 

 or laminal tissue, after removal of 



THE HOOF. 



The villi of the coronary-cnshion and velvety tissue deter- 

 mine the structure and maintain the elasticity of the entire 

 hoof. The laminal tissue has the property of throwing out a tem- 

 porary horn, whether exposed by stripping off' the hoof or by 

 the active changes of inflammation, but this must be replaced by 

 that from the coronet when the foot returns to its normal condi- 

 tion. 



i 



