DISEASES OF THE LATERAL CARTILAGES 387 
condition equally simple when compared with quittor. In 
those cases where the pus is not discovered at the sole, one 
adopts the expectant treatment of poulticing. This, if pus 
is present, is followed by a painful swelling of the coronet. 
At one point there forms a hot and tender enlargement, with 
the hairs on it standing straight up from the skin, which 
latter is seen below red and inflamed in appearance. 
Later, the abscess—for abscess it is—discharges its con- 
tents, the opening is explored, and we find that in extent it 
is not confined to the coronary region, but that it is deep 
enough to constitute a true sub-horny quittor. 
This discharge of the abscess contents may take place at 
a well-defined spot on the coronet, or it may ooze out at 
the junction of the wall with the skin. In appearance the 
discharged pus varies. When the softer structures only 
are attacked it is thick, and yellow or white in colour; 
when bone is involved it is ichorous; and when attacking 
the horn itself black or gray. It may or may not be 
extremely fcetid, and often it is mingled with blood. 
When evidence of a previous opening upon the coronet 
is plain, then it is not considered wise to attempt a paring 
of the sole. Instead, poulticing is at once resorted to, to 
induce the discharge of the pus through its original 
channel. Once this has occurred a fistulous wound re- 
mains, which is open for treatment upon one or other of 
the lines we shall afterwards indicate. 
Compiications—(a) Necrosis of the Lateral Cartilage.— 
This is the so-called ‘ cartilaginous quittor ’ of other writers. 
In all probability it is the condition generally understood 
when the word * quittor’ is used by one practitioner to the 
other. Its tendency to keep the disease existing in a 
chronic form renders it of grave importance, and for that 
reason we give it first mention among the complications. 
It may occur as a sequel either of cutaneous or of sub- 
horny quittor, and may result either from actual wounding 
and infection of the cartilage, or from an attack on it of 
septic matter originating elsewhere. 
Unless there has been discovered a fistula, which on 
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