280 
LESIONS OF THE PAROTID DUCT. 
On the 5th of December, the left wound was almost cicatrized ; 
there ceased to be any discharge, but the canal was sensibly dis- 
tended between the cicatrice and the gland. Here commenced a 
series of morbid phenomena, to which we invite the particular at- 
tention of our readers. The wounds remained closed, the canals 
were distended beyond measure, the left much more so than the 
right one, doubtless on account of the obstruction existing in it 
at the spot where it had been divided; also the fistula renewed 
itself much sooner than in the right one, where there could only 
be a contraction at the point corresponding with the scar*. 
On the 12th of December, fifty-six days after the operation, M. 
Leblanc remarked an enlargement of the left parotid, and at the 
same time the wound in the canal opened again, and gave vent to 
a large quantity of saliva mingled with coagulated albumen. 
The right canal and the parotid became tumefied in their turn, 
and the swelling continued to increase up to the 22d of December. 
At this period the cicatrice of the right duct opened for a second 
time. On examining the parts, M. Leblanc was inundated by a 
discharge of dirty fluid, holding in suspension coagulated albumen. 
The left fistula continued . still, and the animal became visibly 
thinner. 
On the 25th of December this latter became cicatrized for the 
second time ; the right continued with equal intensity. 
On the 30th, M. Leblanc perceived two enormous soft tumours, 
externally, on the course of the cicatrized salivary canal ; one close 
to the cicatrice, the other, which was about the size of a pullet’s 
egg, at the origin of the secretory canal. On being incised with a 
bistoury they discharged a great quantity of saliva. The right 
fistula continued to exist. 
M. Leblanc, not being able to keep the horse any longer, had 
him destroyed on the 30th of December, seventy-three days after 
the experiment. From the resume of these experiments, made by 
M. Leblanc, it appears, 
1. That the opening of the superior salivary duct, with or without 
loss of substance, is equally dangerous. 
2. That in neither case is it susceptible of becoming healed by 
simple union. 
3. That the fistulse which appeared in consequence of the exci- 
sion of a portion of the left salivary canal, and a longitudinal inci- 
sion in the right one, still continued after the lapse of seventy-three 
days. 
4. That several successive enlargements of the canals and the 
* It is important that our readers should not lose sight of the fact, that the 
wound in the left canal was accompanied by loss of substance, while that 
in the right one was a mere incision, without solution of continuity. 
