250 TONIC, ASTRINGENT, AND CORROSIVE 



paper is sometimes substituted for corrosive sublimate in 

 treating sinuses not easily reached with the knife, and a few 

 days after its introduction causes sloughing of the hard walls 

 of the canal, and leaves a healthy granulating surface. It 

 forms one of the most effectual remedies for the inter- 

 digital inflammation and discharge of contagious foot-rot 

 in sheep. 



A light dressing of the solid caustic, or of a weak solution, 

 promotes a healthier condition of indolent wounds and 

 ulcers, represses over-luxuriant granulations, often arrests 

 the irritability of circumscribed attacks of erythema, 

 eczema, or pruritus, and is an excellent dressing for 

 chronic sore teats in cows. Solutions of 10 to 20 grains 

 to the ounce of water destroy the parasites of mange and 

 scab. 



A solution containing half a grain to two grains to an 

 ounce of distilled water abates the pain and congestion 

 of conjunctivitis, and stimulates and heals the inflamed, 

 suppurating eyelids of weakly dogs. It removes opacity 

 of the cornea, if recent and produced by accident, but 

 is of little avail in dense opacity of the cornea, result- 

 ing in horses from repeated attacks of ophthalmia. 

 Solutions of 10 to 30 grains to the ounce of water are 

 sometimes used, with a spray producer, to control 

 laryngeal ulceration, follicular tonsillitis, and pharyngitis 

 in dogs. 



DOSES, etc. Of the nitrate horses and cattle take grs. 

 viii. to grs. xv. ; sheep, gr. ij. to grs. iv. ; pigs, gr. j. to 

 grs. ij. ; dogs, gr. ^ to gr. j. These doses may be repeated 

 two or three times daily, and are given in bolus or pill. 

 When astringent effects are to be directed upon an 

 ulcerated or discharging portion of intestine, the bolus 

 should be made with kaolin, and given coated with 

 keratin. The oxide, having no topical irritant effect, is 

 sometimes substituted for the nitrate as a nerve tonic. 

 For external purposes the sticks of nitrate are sometimes 

 coated with wax to preserve them from the decomposing 

 action of air and light ; and are held in quills or forceps 

 to prevent their blackening the fingers. An ointment is 

 occasionally made with grs. v. to grs. viij. to the ounce of 



