FISTULOUS PAROTID DUCT. 
393 
cessarily occupy, I felt averse, I must confess, to make the expe¬ 
riment. It was in this state of perplexity that the following alteir 
native suggested itself: I made a mixture of argent, nitrat. 3fs., 
acid, nitric. aquse pur, ^j., and injected this into the fistulous 
opening, in the direction of the duct leading to it. At. the same 
time I administered in ball six drams of aloes. Four hours after¬ 
wards the glandular parts were considerably tumefied, and very 
susceptible of the pressure of the finger. 
2d Day ,—The swelling has spread a little way down the neck, 
and the tenderness is extreme. No discharge. He purged after 
exercise. 
36? Day ,—Tumefaction diminished. Discharge of saliva re¬ 
turned. 
Qth Day ,—The tumour has been daily growing less. The 
discharge continues in diminished quantity, and is now again 
mingled with saliva. Caustic injection repeated. 
7th Day ,—But little augmentation of the swelling. No issue 
from the hole. 
\4ith Day ,—Nothing has been done since. The swelling is 
diminishing, but very slowly : the discharge continues, but much 
reduced both in stream and quantity. 
\7th Day ,—The swelling has considerably subsided. The 
gland, not very much augmented beyond its natural volume, has 
a hard schirrous feel, and has lost almost all its acquired sensi¬ 
bility, Very little saliva has appeared within the last twenty-four 
hours. < 
22d Day ,—The discharge has, for these two days past, ceased 
altogether. The fistulous orifice is (permanently to all appear¬ 
ance) closed up: its situation, however, seems likely to remain 
well marked by an indentation and sort of puckered contraction 
of the integument. The gland is but little more prominent than 
its fellow; it has a solid, firm, indurated feel; and the animal 
bears pressure upon it with impunity. In this state, the horse 
was discharged; and from this time remained free from the 
disorder. 
The case I am now going to relate was attended with a different 
result, and one which, I must* acknowledge, surprised and even 
alarmed me; at the same time, it has turned out to be one by which, 
I trust, additional light will be cast on the subject before us. 
In May, 1826, a long switch-tail bay horse, five years old, in 
very fat condition, was sent to my father, to be treated for fistulous 
parotid duct. The fistulous orifice was situated upon the side of 
the cheek, directly opposite to the place where .the duct pierces 
the bursal membrane, to open into the mouth. The opening ap- 
