152 
A. ZUNDEL. 
tion and the pain are not excessive, because there is there an 
abundance of soft, fatty tissue. But when the caries is more 
forward, and is situated more deeply, in a point nearer the ar¬ 
ticular surfaces, the lesion then affects the fibrous tissues, and 
the pain is greater. It is sometimes excessively acute. 
Upon the lateral part of the coronet, towards the heels or the 
quarters, a more or less developed tumefaction appears, more or 
less painful, according to the duration of the disease, and in this 
case more or less indurated. In the centre there exists a granu¬ 
lating fistulous wound. There are one or several fistulae, whose 
openings shows granulations, bleeding easily, their course al¬ 
ways forward, running at times in straight lines, at others ir¬ 
regularly. The tracts frequently communicate, and discharge a 
granular, serous and thin pus, of pale greyish color, generally 
odorless, or slightly sanious, containing greenish particles, which 
are but pieces of diseased fibro-cartilage. This pus dries up on 
the surface and adheres to the hoof and to the hairs, and some 
times irritates the surface of the skin. If one of these fistula 
become cicatrized, a fluctuating tumor soon appears, close to it, 
which rapidly ulcerates, and then gives rise to another fistula. 
If the disease is quite old, the hoof of the quarter corresponding 
to the necrosed cartilage, loses its perioplic band, becoming 
rough, ramy and cracked, and the wall is thickened, because the 
irritation of the coronary band has stimulated its growth. This 
change in the condition of the wall varies with the length of 
time the disease has existed, and consequently, it indicates its 
duration quite accurately, when one remembers that the hoof 
grows downwards about one centimeter in each month. 
When cartilaginous quittor is the sequelae or complication of 
suppurative corn; of a punctured wound by a nail of the shoe; 
or any other affection of the foot, the symptoms proper to these 
diseases are first observed, though the lameness is greater, and 
the fistulae of the quittor is evident. Often, however, this, in¬ 
stead of being external and on the coronet, is situated at the in¬ 
ferior part of the foot, at the internal face of the inferior border 
of the wall, upon the sole, and sometimes connected with the 
wound of some of those affections of the foot. 
