ON THE NAVICULAR DISEASE. 37 



blood locally, until the system is affected generally. 



Six quarts of blood to be drawn at one operation Abstraction of 



• T xl 1 J 1 * p blood from the 



from an artery encircling the lower edge and toe oi lame foot until 

 the coffin bone, the hoof having been prepared as pathizes. 

 follows : — The sole to be pared till small specks of 

 blood begin to appear at every part ; the bars to be 

 entirely removed ; and those channels or commis- 

 sures between the bars and the frog to be exca- 

 vated with a narrow drawing-knife to the quick, 

 from end to end ; the projecting part of the crust, 

 which forms the ground surface, to be somewhat 

 levelled with the rasp from toe to heels ; but the 

 shortening of the toe and lowering of the heels to 

 be deferred till another stage of the treatment. 



With the next process which I have to recom- 

 mend, I am apprehensive many practitioners may, 

 at the first view, be somewhat startled; but I pledge 

 my professional credit on the safety of the practice. 



It consists in the entire removal of crust or wall 

 at the inside heel, and of the bar adjoining, with 

 rasp and drawing-knife, as near to the laminae as 

 possible, w ithout drawing blood, and extending this 

 excision along the quarter, according to the urgency Excision of the 

 of the case, and the period of time allotted by the of the c^rust.^"^ 

 owner for treatment and rest, thereby leaving the 

 inside quarter isolated from the other parts of the 

 hoof. The direct object in view for sacrificing a 

 portion of hoof so slow of growth being to unfetter 

 the inside heel of the coffin bone by taking off lateral 



