444 
A. ZCNDEL. 
the error of burning the hoof too deeply, instead of simply cauter¬ 
izing the coronary band. Solleysel speaks of the cauterization 
of the band. Garsault mentions only the burning with three Ss 
across the crack. Such cauterization could have no useful effect, 
and the deep application of the cautery might be followed by 
serious complications. For these reasons Lafosse objected to 
them. In our days it is abandoned, and the coronary band only 
is touched by the cautery ; Castandet and Rey also employ it. 
Chemical cauteries have also been recommended, nitric acid by 
Laguerriniere, and more recently by Lafosse. 
Putty of corosive sublimate and ointment of oxide of mer¬ 
cury are also in use, but have no marked advantages. Blisters 
prove very beneficial, and also turpentine, as recommended by 
Lafosse and Rey, and the oil of Gade by Maury. Defays ad¬ 
vises the putty of gutta percha, which is also used to conceal the 
clasps. 
The curative treatment is necessary whenever any complica¬ 
tion attends the crack. If it is recent, antiphlogistics and rest 
should be first tried; cold bathing, blisters combined with 
hygienic treatment may then be sufficient. A single groove at 
the upper part of the crack, near the coronary band, is of ten suffi¬ 
cient, or the removal of a Y shaped portion of hoof, extending 
more or less deeply according to the condition of the crack, care 
being observed to avoid the growth of vascular granulations be¬ 
tween the edges of the crack. There are cases where it is not 
necessary to remove the segments of the hoof entirely down to 
the soft tissues, but only to thin them down and to apply over it 
a dressing of oakum, secured by several turns of roller band¬ 
ages. In all cases a bar shoe must be applied to relieve the 
pressure on the quarter where the crack exists. This is princi¬ 
pally recommended by Prevost, Girard and others. 
If there are deep lesions of the sub-horny tissues, a piece of the 
wall must be removed, and the operation for radical cure be per¬ 
formed. It is an old operation, by which all diseased tissues are 
exposed. As little of hoof as possible is removed. In operating, 
two grooves will be made alongside and at some distance of the 
solution of continuity. The wall between is removed so as to expose 
