98 



SCIEXTU'IC HORSESHOEING. 



Fig. 24. upper surface of a perfect hoof, corresponding with the 

 under surface shown in the pkixeding figure. 



A, Internal ridge or spur of the frog-stay dividing the fissures. 



B, B, Internal fissures, or depressions between the bars and frog, in 

 which tlie plantar cushion finds lodgment. 



C, Internal point of fi.ssures corresponding with external summit of the 

 horny frog. 



D, D, Internal surface of the horny sole. 



E, E, External upper face of wall. 



F, F, Dotted line indicating thickness of wall. 



G, G, Transverse line across center of hoof midway through quarters. 

 H, H, Longitudinal line through center of hoof marking middle of toe 



and heel. The intersection of these lines locates the normal center of gravity. 



I, I, Upper margin of the coronary band called the periople ring and 

 continuing to the skin. 



J, J, Laminar leaves of horny tissue coming out from the internal 

 face of the wall and extending over' the bars. 



