QUITTOR. 1067 



attention. For horses with flat feet, the shoe should be fitted long 

 at the heels and should have broad branches. After recent suppurating 

 corn a bar-shoe may advantageously be applied. On the other hand, 

 horses with high, " blocky " feet often go better in " tips," Charlier 

 shoes, or shoes with thin heels, provided no active inflammation 

 exist. The regulation shoe for corn, employed by the great Com- 

 pagnie des Omnibus de Paris, is a three-quarter shoe, the branch 

 of the shoe being cut away on the side corresponding to the injury. 

 Since adopting it the number of cases of corn has greatly diminished. 

 During a period of sixteen months, only 44 cases of corn were reported 

 amongst 15,500 horses in regular work. 



In dry corn nothing further is required. Paring out corns is 

 undesirable, and even injurious, because, after removal of the reddened 

 layers of horn, the sensitive tissues are often exposed, and entrance of 

 infective material facilitated. 



For moist corn, antiseptic -astringent dry dressings are indicated. 

 The spongy horn should be removed, the wound carefully disinfected 

 and protected by an antiseptic dressing applied with moderate pressure. 

 This treatment should be renewed daily until all moisture has 

 disappeared from the wound. 



In suppurating corn, free exit must be provided for the pus, 

 which otherwise may accumulate beneath the sole. Infection rapidly 

 extends and pus may soon appear at the quarter between hair and 

 hoof, or at the bulb of the frog. If necrosis have occurred, the dead 

 tissue should be removed as early as possible, and the spread of 

 infection checked, antiseptics being employed either to destroy or 

 hinder the development of bacteria. (For a detailed account of 

 the various methods of shoeing horses with corns, see Dollar and 

 Wheatley's " Horse-shoeing and the Horse's Foot.") 



V. -QUITTOR. 



The name " quittor " is applied to necrosis of the lateral cartilage 

 associated with chronic, purulent inflammation of the surrounding 

 tissues and the formation of sinuses. The cartilaginous prolongations 

 of the wings of the os pedis are surrounded by a firm connective 

 tissue, provided with many elastic fibres, termed the " parachondrium," 

 which is continuous with the subcoronary connective tissue and the 

 plantar cushion. 



Suppuration in the parachondrium is always liable to be followed 

 by necrosis of the cartilage ; and, owing to the difficulty with which 

 the dead portions separate the process is obstinate, and the sinuses 



