186 INJURIES. 



cacious manner. We know, when glands become schirrous, 

 they no longer possess the power of secretion ; and, I thought, 

 if we could induce a similar action within the parotid, it 

 might answer every purpose of paralysis, or extirpation. To 

 produce this annihilation of structure — it seemed requisite 

 to excite a certain degree of inflammation : the only difficulty 

 that presented itself was, what degree that ought to be, and 

 in what manner the inflammation thus excited was to be 

 controlled? A. very high inflammatory action would be 

 followed by sloughing : a low degree would not accomplish 

 the end. 



My FIRST Experiment was made on a horse having fistula of the 

 parotid duct, which had supervened on the abscess of strangles. Two 

 fistulous openings, both situated upon the gland, remained immediately 

 after the disease ; one of which had closed up, but the other resisted 

 every means that appeared practicable. Into this aperture, which opened 

 under the root of the ear, I injected with a syringe the following mixture : 



Lunar Caustic, 5SS ; 

 Nitric Acid, 5j ; 

 Distilled Water, 5J. 



At the same time administering six drachms of Aloes. Four hours 

 afterwards the gland was tumefied, and tender on pressure. Next day, 

 the swelling had spread a short distance down the neck, and the tender- 

 ness seemed to be extreme. No discharge from the opening ; the animal 

 purged. Third day : swelling diminished ; discharge of saliva returned. 

 Sixth day : the tumour has daily decreased ; discharge both purulent and 

 salivary ; the same caustic injection repeated. Seventh day : no run- 

 ning from the aperture; tumour reproduced, but not to the same degree 

 as before. Fourteenth day : swelling abating, but very slowly ; discharge 

 returned, but much reduced in quantity. Seventeenth day : the gland 

 slightly more prominent than natural ; has a firm scirrhous feel, and has 

 lost almost all its sensibility ; very little saliva has appeared dilring the 

 last four and twenty hours. Twenty-second day : no discharge ; the 

 fistulous orifice closed, and, to all appearances, permanently so. The 

 gland a little more prominent than its fellow of the opposite side ; has a 

 solid, firm, indurated feel ; pressure upon it is endured. From this time 

 the horse got rid of his troublesome disorder. 



My SECOND ExTERiMENT was made on a horse purchased with the 

 malady upon him. The fistula was on the side of the cheek, opposite to 

 where the duct terminates internally. In this case I tried /?/-6'55«ri', by 



