20 
BURSATIfh 
lid, and also under the conjunctiva, and in the substance of 
the cartilage nictitans, filling the whole anterior angle of the 
eye. The tumours in their ulcerative state and growth had 
almost led to displacement of the eyes, rendering the sight 
obscure. What little could he seen of the visual organs 
was only from a backward position, the sight of the eye being 
in that direction. The case is an exception, for the deposit 
of tuberculous matter rarely occurs under any other structure 
than true epidermis. I have seen a few instances in which 
the angles of the mouth have been the site of bursatic ulcera¬ 
tion which extended a short way on to the buccal membrane. 
When occurring in such positions there can be but little 
doubt that the primary deposition took place under the skin. 
Bursatic ulcers obtain a far greater size upon the face than 
I have ever seen them in any other site, and, being in very 
close proximity to the eyes, the ulceration frequently robs 
those organs of their function; in many cases, in fact, the 
structures of the eyes are broken down. Medium ulcers 
in this position are of so common occurrence among the 
hackney ponies that if I were in a position to go into figures 
the result would be positively incredible to those unacquainted 
with the subject; and it needs scarcely to be observed that, 
in consequence of the frequency of the bursatic ulceration 
in this position, enormous numbers of these ponies are blind, 
some of one eye and many of both. The same form of ulcer, 
the medium, occurs in horses, but does not show a special 
tendency to form more particularly under the eyes, as is the 
case with the hackney ponies, for in the case of the horse the 
medium ulcers show fancies for particular sites, but not one 
in common. This I assert is one of the almost innumerable 
and remarkable features of bursatie, namely, in these ponies, 
the almost entire absence of circular papillated ulcers, and 
the disease showing itself so frequently in one position only. 
(C Ophthalmia” is a disease from which vast numbers of these 
ponies suffer, and I believe, from daily observation, that if I 
were to examine the first twelve ponies which I saw attached 
to native hackney carriages, I should find at least eight or 
nine out of the dozen presenting the following appearances :—• 
No. 1, a large cicatrix on one or both sides of the face a little 
below the eyes. No. 2, bursatic ulceration in the same 
position ; and so on. In each of these cases I should find 
the eyes red and irritable, eyelids swollen and projecting, 
with more or less opacity of the cornea and intolerance to 
the rays of light. It is even not unlikely that the animals 
would be blind of one or both eyes. Why is this common 
occurrence of “ ophthalmia ?” Simply in consequence of 
