RING WORM. 319 
that simple agent is rendered more active when combined with sulphur, as 
follows: ; 
Green soap and sublimed sulphur, of each two ounces; glycerin, one 
ounce. 
This ointment or paste should be vigorously rubbed onto the diseased 
patches or spots twice daily for a week, and then washed off, all other parts 
being well scrubbed at the same time. 
An efficient and non-poisonous application, to which there can be no objec- 
tion for use even on house-pets, is a solution of the hyposulphite of sodium in 
water, in the proportion of one drachm of the former to one ounce of the 
latter. If the eruption be kept moist with it, a cure ought to be speedy. 
The least objectionable remedy, and one which often proves quite as effica- 
cious as any other, is pyrogallic acid in collodion, in proportion of thirty 
grains of the former to two drachms of the latter. This constitutes a paint 
which ‘‘sets” within a minute, therefore it must be put on quickly. A 
camel’s-hair brush being employed, the rule should be two or three applica- 
tions daily until the eruption has disappeared. One coating having been 
applied, if the same be too thin or spots remain untouched, a second should 
not be put on within ten minutes; at the end of which time the first ought to 
have become dry and hard. Soon the “ paint” will have been detached in 
places, and before another application is made it will be necessary to remove 
the loosened portions. 
Were it not possible for the affected dog to reach the eruption with his 
mouth, and simple preparations had failed, the following might be tried: 
Chrysophanic acid, one drachm ; white precipitate, twenty grains ; lanolin, 
one drachm; and benzoated lard, six drachms. This should be well rubbed 
into the ringworm, three times daily, after it has been, in so far as possible, 
freed from scales by washing. 
This ointment alone is but rarely disappointing. It may, however, prove 
so; in which event its use must be prefaced by the following treatment: First 
wash with soap and water, a little of the carbonate of soda having been put 
into the latter. After thoroughly drying the eruptive spots, lightly apply acetic 
acid to them by means of a small camel’s-hair brush. Allowing about five 
minutes for this to soak in, the chrysophanic acid ointment can then be used 
with certainty of good effect. Every day thereafter this same preparatory 
treatment ought to be employed before the ointment goes on. 
If the ringworm.has existed a long time and the skin is much thickened, 
the use of the tincture of iodine might be persisted in until the same is thinned 
down and restored to its normal condition. Or after the iodine has been 
applied for a week and the parasite destroyed, the oil of tar and glycerin— 
one part of the former to three of the latter — could be used for the purpose 
of reducing the thickening. 
