196 
A. ZUNDEL. 
become a means of irritation of the fibro-cartilage, and cause an 
extension of the necrosis. (Hurtrel, D’Arboval, Lafosse.) In 
our day this treatment is almost entirely ignored by good practi¬ 
tioners, and the potential cautery more generally adopted. 
This had already been employed by hippiatrics. Solleysel prin¬ 
cipally recommended the use of corrosive sublimate mixed with 
aloes; Girard, Barreyre and Bernard also mentioning it. English 
veterinarians recommend their use very strongly. (White, Blaine, 
Riding, etc.) These practitioners all used the solid caustic, 
either in the form of trochisc or in powder, and if they obtained 
good results it required a much longer time than that required in 
our day by the use of the liquid forms of caustic which are at our 
command. With the solid form the action was of limited extent, 
and scarcely more effective than that obtained by the actual cau¬ 
tery; moreover, they frequently injured the healthy structures 
by irritating them and increasing the inflammation, and thus re¬ 
sulting in serious complications. 
As we have said, liquid caustics are largely used to arrest the 
spread of the caries; they modify the process of decomposition, 
dry up the suppuration and stimulate the tissues without injuring 
the healthy structures. This mode of treatment must be credited 
to Mariage, who in 1847 established the unfailing efficacy of re¬ 
peated injections of Yillate’s solution; one of sulphate of copper 
and sulphate of zinc, 64 grammes of each in 1 liter of vinegar, 
and decomposed by 125 grammes of Goulard’s extract. It is 
really simply a solution in vinegar of acetate of copper and zinc, 
holding sulphate of lead in suspension. Yillate himself had al¬ 
ready used his solution with success by injecting it in cartilagin¬ 
ous quittor as early as 1829, since which time Burgniet, Yerrier, 
Sr., Collignon and others have recognized the benefit of liquid 
escharotics in the treatment of the same disease. Yillate’s Solu¬ 
tion is not a specific, and cartilaginous quittor has been cured by 
the injection of tincture of sublimate (10, p. 100), with solution of 
nitrate of silver (Bernard), with the perchloride of iron, chloride 
of copper, sulphate of copper and zinc, nitrate of lead, more or 
less ^concentrated mineral acids, and especially the rabel water 
(Collignon). 
