438 
S. E. PHILLIPS. 
I know of no sore that flies have such a paiticular liking 
for and it is only by force they are induced to leave, or if 
allowed their privilege they will stay on these sores in the 
evening until it becomes quite dark. 
As fall approaches flies diminish in numbers, our burast.tee 
patients dininish, the ulcers take on a much healthier action, 
and although slow in healing before cold weather is upon us 
we have no more bursattee sores. 
There seems to be an itchy sensation associated, and in 
treating some patients it is almost impossible to secure them 
that they may not rub the parts, even though the animal be in 
a dark place and the parts protected from flies. If the animal 
does not rub the parts and flies are not permitted their 
liberty, they can be healed quite readily. 
Horses and mules alike and under all conditions, whether 
in perfect health or otherwise, seem to be susceptible to the 
disease. It is not confined (as some suppose) to animals that 
are half fed and cared for or housed in poorly ventilated 
quarters, but on the contrary, it does appear on horses having 
the best of care and in good flesh. All that is required duiing 
its particular season is a wound to gain a foothold, be it on a 
private driving horse or a street car mule, and then to be 
neglected by the owner and the result is evident. This sore 
enlarges and by allowing the animal to rub the parts new ones 
develop, which coalesce with each other until quite a surface 
may become involved. The pride that most people have foi 
their private horse enables them to render assistance sooner 
and care for them better than animals owned by companies. 
This, with the knowledge that they are not subject to as many 
injuries, are the reasons we haven’t more bursattee sores on 
private driving horses. 
There are a great many theories advanced as to the true 
pathology of this disease, but when we find that none are fully 
substantiated we will content ourselves with Prof. Robert¬ 
son’s definition for it. “That it depends on a state of the 
system not vet defined which he called bursattee diathesis. 
The first appearance of these sores is characterized by the 
formation of small soft nodules, either one or many situated 
