228 
A. ZUNDEL. 
duce its effects and render its applications more convenient. Col- 
lignon and Renault recommend its reduction with alcohol; Mer- 
cier mixed it with four parts of oil of turpentine; Prange with 
equal parts of tar, and Plass made a paste of it with burnt alum. 
This last remedy, very simple in its formula, was applied without 
any dressing ; it lias proved most excellent in a great number of 
cases, but may give rise to too deep cauterization (Bouley, Man- 
del). 
Arsenious acid was much used by old horsemen, combined 
with cegyptiacum, turpentine and other ingredients. Hoffmann pre¬ 
fers the arsenite of soda in solution; he sold his secret to the 
Austrian government for a high price. Butter of antimony was 
recommended by Huzard, Sr.. Prevost, and especially Huzard ; 
chloride of zinc was preferred at the Lyons school. ' 
The treatment of canker by actual cauterization was indicated 
by Solleysel, but soon abandoned by him. In applying the cau¬ 
tery upon the uncovered tissues of the hoof we encounter the 
chance of producing a very severe inflammation, which spreads 
by degrees and gives rise to extensive slough of the hoof, as a 
consequenee of the serous exudation which takes place ; the action 
of the cautery may then become either too mild or too vigorous. 
Still, it has been recommended by Prevost, of Geneva. Hurtrel 
D’Arboval. who also employed it, used it in the following man¬ 
ner : the parts being covered with a mixture of gunpowder and 
sulphur, a red-hot iron was applied to the spot, the powder burn¬ 
ing suddenly and the sulphur slowly. If the combustion was too 
slow, he increased it and kept it up by the same means. When 
the operation is concluded the parts are transformed into a black 
scar, which can be easily removed by scraping, and the applica¬ 
tion and cauterization may be repeated, and so on until it appears 
that a sufficient amount of heat has penetrated the tissues to de¬ 
stroy the material by which canker could be regenerated. The 
cauterization being once properly effected, then in order to sustain 
irritation, the foot is covered with Burgundy pitch, or resin, 
melted and warm, which is allowed to cool off on the foot, when a 
dressing of oakum and the shoe are put on. The dressing is 
changed as soon as suppuration shows itself and renewed with the 
