n43i 



and marked with cracks in various directions, 

 and the edges of the frog will generally be 

 ragged. 



Now, as the hoof continually grows, whether 

 it be worn away or not; in the latter case, the 

 newly-formed horn, pushes before it the outer 

 part, which, when it has attained a certain dis- 

 tance from the vessels within the hoof, no longer 

 receives any moisture from them, and thus be- 

 comino- dry, loses its attachment with the living 

 horn, and falls off. Thus, the dead portion of 

 the crust gradually breaks down in small pieces, 

 till it reaches the level of the tough and living 

 sole. The sole separates in scales of an irre- 

 gular form, but generally thick near the frog, 

 and thinner as they approach the crust; and 

 frequently the upper part of the bar conies 

 away with that portion which it joins, leaving 

 the top of the bar, which remains on a level with 

 the remaining sole. 



The old frog, in detaching itself from that un- 

 derneath, does not observe a mode equally re- 

 gular with the sole, as sometimes it separates in 

 one continued layer, and at others, in small 

 fragments; but in tiie latter case it has been 

 usually undermined, by its perspirable, matter 

 having become putrid from being confined, and 



