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affect the outside quarter, tlie toe or the heel, where it is of but little 

 consequence. It consists in the inflammation of a small part of the 

 coronary band and adjacent skin, followed by sloughing and more or 

 less suppuration, which in most cases extends to the neighboring 

 sensitive laminte. 



Causes. — Injuries to the coronet, such as bruises, overreaching, 

 and calk wounds, are considered as the common causes of this dis- 

 ease. Still, cases occur in which there appears to be no exciting 

 cause, just as in the other forms of quittor, and it seems fair to con- 

 clude that subhorny quittor may also be i^roduced by internal causes. 



Symptoms. — At the outset the lameness is always severe, and the 

 patient often refuses to use the affected foot. Swelling of the coro- 

 net takes place close to the top of the hoof, causing the quarter to 

 protrude beyond the wall of the foot. This tumor is extremely sensi- 

 tive, and the whole foot is hot and painful. After a few days' time 

 a small spot in the skin, over the most elevated part of the tumor, 

 softens and opens, or else the hoof separates from the coronary band 

 at the quarter or well back toward the heel. From this opening, 

 wherever it may be, a thin, watery, offensive discharge escapes, often 

 dark in color, at times mixed with blood, and always containing a 

 considerable percentage of pus. 



Probing will now disclose a fistulous tract leading to the bottom of 

 the diseased tissues. If the opening is small there is a tendency upon 

 the part of the suppurative process to spread downward; the pus 

 gradually separating the hoof from the sensitive laminae until the sole 

 is reached, and even a portion of this may also be undermined. 



As a rule, the slough in this form of quittor is not deep, so that if the 

 case receives early and proper treatment complications are generally 

 avoided, but if the case is neglected, and, occasionally, even in spite 

 of the best of treatment, the disease spreads until the tendon in front, 

 the lateral cartilage, or the coffin l)one and joint as well, are involved. 



In all cases of subhorny quittor much relief is experienced as soon 

 as the slough has come away, and rapid progress toward recovery is 

 made. If, however, after the lapse of a few days' time, the lameness 

 still remains and the wound continues to discharge a thin unhealthy 

 matter, the probabilities are that the disease is spreading, and that 

 pus is collecting in the deeper parts of the foot. In Zundel's opinion, 

 if the use of the probe now detects a pus cavity below the opening, a 

 cartilaginous quittor is in the course of develoiament. 



Treatment.— Wot baths and poultices are to be used until the pres- 

 ence of pus can be determined, when the tumor is to be opened with 

 a knife or sharp-pointed iron heated white hot. The hot baths and 

 poultices are now continued for a few days, or until the entire slough 

 has come away and the discharge is diminished, when the dressings 

 recommended in the treatment for cutaneous quittor are to be used 

 until recovery is completed. In cases where the discharge comes 



