296 
CORRESPONDENCE. 
that I thought the discharge thence was in part, if not entirely, 
due to a suppurative condition of the frontal sinuses, and that in 
order to give the necessary relief to this part the operation of 
trephining the sinuses would have to he resorted to. I then told 
him how that operation was performed, and advised him to write 
to the owner of the animal and tell him as nearly as possible the 
condition of his horse and request that something should be done 
to give him relief. He then asked me to write my diagnosis of 
the case, stating just as nearly as I could Prospero’s condition, 
excepting so far as related to the removal of the tooth by Mr. 
Clark, as he would explain that to Mr. Parks himself. I there¬ 
upon wrote a short history of the case as I found it and it was 
enclosed and sent to Mr. Parks. In a few days I received a postal 
from Mr. Turner requesting me to come to his place and take 
charge of Prospero’s case, by order of the owner. 
Accordingly, on the 9th of May I visited the horse, (for the 
first time professionally) with the evident intention of trephining 
his frontal sinuses, and doing whatever else I thought best under 
the circumstances. I again made another examination, and found 
that all the former symptoms were very much aggravated, and 
the animal much more depleted. On passing my hand over t e 
surface of the enlargement I could feel a spot near its center 
more soft than the balance, and could feel it fluctuate as though 
containing pus. I called the attention of Dr. Hugh Legambre, 
a practitioner of Philadelphia, who was present, to the condition 
referred to. I then told Mr. Turner I had resolved to trephine 
the animal, and Dr. Legambre kindly offered to assist me., I 
then gave the animal an angesthetic and proceeded to cast and 
secure him for the operation. Having done this, I examined the 
softened spot in the enlargement on the side of the head more 
thoroughly, and concluded to open it. After cutting down about 
an inch, or perhaps more, I had an escape of pus of the same 
offensive odor as that which escaped from the mouth. This soon 
ceased, and a severe hemorrhage followed. I then passed my 
finger into the wound, and pressing it down toward the bottom of 
my opening, it came in contact with a large mass of diseased tis¬ 
sue, which gave way before my finger, when, to my surprise, I 
