200 
W. C. HAN A WALT. 
this, I believe, is sufficient for these minor occasions. 
Case III was another patient treated by one of those 
u Thistlo ” doctors for one year without success. This was a 
bay filly, 3 years old, with a very simple looking fistula with a 
sinus running down along the anterior border of the spinous 
process of the second dorsal vertebrae, and involving the branch 
of the ligamentum unchea. 
It discharged a granular, whitish, foetid pus, about the con¬ 
sistency of paste. I injected into this sinus, with force enough 
to make it reach all the cavities, about two ounces of dilute 
chromic acid. I held this in with considerable pressure for 
about five minutes, when I let the pressure off and let the sur¬ 
plus acid run out and away. After about six days I made an 
exit at the bottom of this cavity for drainage, and it made a 
nice recovery and the foetor was soon dispelled. 
I think these cases will suffice to show the great value and 
somewhat the line of therapy to which chromic acid may be 
used with success and advantage. A few general remarks now 
and I will leave the subject to your consideration. Great care 
must be taken in the use of this drug, that it does not injure 
you, my dear doctors, for the strength I have recommended 
would quickly burn your flesh severely, almost on instant con¬ 
tact. But still I am not so exact in its dilution when I use it, 
for very frequently I make the dilution by guess, and have 
never had any mishaps, save one instance where an attendant 
wiped the solution from a sore which I treated and would not 
wash his hands as I directed him. Soon after his hands were 
covered with blisters about the size of a large hulled pea. I 
applied glycerine to his hands, and they were soon well—again 
showing its great antiseptic powers. 
I need not caution any one who reads the therapy in the 
U. S. P. not to connect chromic acid with glycerine, for he will 
see it is thus a violent explosive. I use this agent anywhere 
where I want to produce a quick slough, for it leaves a nice, 
smooth, clean, healthy granulating surface that heals very 
readily. It is almost painless in action and hence is better in 
