BURSATiE. 
713 
tially affected. To use an old proverb, (( though the wound 
he healed the scar remains,” which after a period of quiescence 
will reopen. These circular ulcers, when neglected, re¬ 
quire most energetic treatment, in consequence of the deep 
and strong attachment of the papillae to the tissues beneath. 
Indeed, these papillae have to be uprooted before the complete 
healing of the ulcer can be effected. Circular ulcers are 
frequently seen on and about the coronets, and often lead to 
quite an altered secretion of horn, corresponding in width to 
their size. In one neglected case, which I saw, a large ulcer 
had originally been seated on the off-hind coronet, which 
had been allowed to pursue its own course, until it 
had healed by forming a wart-like cicatrix, having a small 
central opening, from which exudative matter was dis¬ 
charged. This ulcer had destroyed the coronet for the space 
of an inch, and led to a deep, broad fissure with ragged 
edges, which extended the whole of the way down the outer 
quarter of the foot. The floor of the fissure was formed of a 
thin plate of horn, just sufficient to protect the lamina from 
dirt, but not from other injury. 
The operation of healing of a bursatic ulcer by natural 
efforts is a most imperfect process, for although the sore 
be covered over a bursatic tubercular mass remains, having 
its characteristic hard and fixed base. When, however, 
the healing takes place after caustic applications, I have 
seen it perfectly effected, at least, so far as that par¬ 
ticular site is concerned; but I have never seen the same 
after self healing. A naturally healed ulcer is almost certain 
to reopen. Circular ulcers which remain scabbed often 
present an appearance much like a large “ Hunterian 
chancre,” and, indeed, are sometimes called “ bursatic 
chancres.” 
(b) The medium bursatic idcer .—I have so called this 
ulcer because it marks, as it were, an intermediate stage of 
the malady. 
These ulcers, like the circular papillated variety, are 
commonly observed on scars, and not unfrequently they ex¬ 
tend under the true skin. As a rule, they only occur on the 
anterior parts of the body, neck, and face ; more rarely on 
the extremities. They are frequently seen on the shoulders 
under the saddle place and the parts embraced by the girths, 
seemingly in consequence of these portions of the body being 
frequently chafed or galled. The favorite spot, however, for 
the medium ulcer appears to be on the face, a little below 
the inner angle of the eyelids. The first sign of the formation 
of the medium ulcer is an elevation of some particular spot* 
