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by a sudden increase in the severity of all of tlie symptoms. On the 

 other hand, if the attack primarily is one of tendinous quittor, the 

 earliest symptom seen is a well-marked lameness in the affected leg. 

 In those cases due to causes other than injuries this lameness is at first 

 very slight, and the animal limps no more in trotting than in walking; 

 but later on, generally during the next forty-eight hours, the lameness 

 increases to such an extent that the patient often refuses to use the leg 

 at all. An examination made during the first two days rarely discloses 

 any cause for this lameness ; it may not be possible even to say, with 

 certainty, that the foot is the seat of the trouble. On the third or 

 fourth day, sometimes so late as the fifth, a doughy-feeling tumor will 

 be found forming on the heel or quarter. This tumor grows rapidly, 

 feels hot to the touch, and is extremely painful. As the tumor devel- 

 ops all the other symptoms increase in intensity ; the pulse is rapid 

 and hard, the breathing quick, the temperature elevated three or four 

 degrees, the appetite is gone, thirst is increased, and the lameness is so 

 great that the foot is carried in the air if locomotion is attempted. At 

 this stage of the disease the patient generally seeks relief by lying 

 upon the broad side, with outstretched legs, the coat bedewed with a 

 clammy sweat, while every respiration is accompanied by a moan. The 

 leg soon swells to the fetlock ; later this swelling gradually extends as 

 as high as to the knee or hock, and in some cases it even reaches the 

 body. As a rule several days elapse before the disease develops a well 

 defined abscess, for, owing to the dense structure of the bones, liga- 

 ments and tendons, the suppurative process is a slow one, and the pus 

 when formed is prevented from readily collecting in a mass. 



Recently I made ix, post mortem examination on a typical case of this 

 disease, where the animal had died on the fourth day after being found 

 on the range slightly lame. The suffering had been intense; yet the 

 only external evidences of the disease consisted in the shedding of the 

 hoof from the right fore foot, and a limited swelling of the leg to the 

 knee. The sloughing of the hoof took place two or three hours before 

 death, and was accompanied with but little suppuration and no hemor- 

 rhage. The skin, from the knee to the foot, was thickened from watery 

 infiltration (cedema), and on the inside quarter three holes, each about 

 one-half of an inch in diameter, were found. All had ragged edges, 

 while but one had gone deep enough to perforate the coronary band. 

 The loose connective tissue, found beneath the skin, was distended with 

 a gelatinous infiltration, over the whole course of the flexor tendons, 

 and to the fetlock joint over the tendon in front. The soft tissues 

 covering the cofQn bone were loosened in patches by collections of pus 

 which had formed beneath the sensitive lamiure. The coffin and pastern 

 joints were both inflamed, as were also the coflin, navicular and coronet 

 bones, while the outside toe of the coffin bone had become softened 

 from suppuration, until it could readily be crumbled between the fin- 

 gers. The coronary band was largely destroyed and completely sepa- 



