TUMOUR OF THE ELBOW. 201 



aud, as the saddle is often chambered, or additional padding 

 is placed where it bears upon the injuries, they continue for 

 years without becoming changed. Under these circum- 

 stances, they are often let alone, it being with most people 

 an object not to lose their horses^ services from a cause appa- 

 rently so trifling. Should a remedy be demanded, repeated 

 blisters may be tried. Mr. Blaine recommends passing 

 setons through the callosities : a commendable practice, if you 

 can prevail on the owner of the horse to submit to the loss of 

 time which setons, to prove effectual, demand. To what extent 

 these tumours can be dissected out " without removing the 

 integument " I am unable to determine ; but it occurs to me 

 their connexion with the skin must be of too intimate a 

 nature for their removal in such a manner. 



SiTFAST, " a part of a horse's hide turned horny." The 

 repeated injury any portion of the skin is liable to receive 

 from the saddle causes it to be so contused, as not only 

 to burst its blood-vessels, but also excites and keeps up a 

 continual inflammatory action, the cuticle becomes horny, 

 aiid an excrescence is formed corresponding to corns on our 

 feet.^ The tumour now becomes callous and insensible, 

 acquiring a defined border. In many instances we find the 

 skin around the sitfast withdraws from it, and a little matter 

 oozes from between it and the cutis; the hair upon being 

 parted, exposes a line of ulceration indicating separation has 

 commenced, and the sitfast will shortly be cast ofi" as a slough. 

 This process, however, may prove a tedious one. We there- 

 fore, promote it by the frequent application of a little blister- 

 ing ointment to the part. The separation leaves a common 

 wound, which must be treated according to the principles 

 already made known. 



TuxMOUR UPON THE Elbow is a very common eyesore, 

 particularly among troop-horses, in which, as I once thought, 

 it originated from contusion or pressure of the hind shoe. 

 I believe it is caused by the heel of the fore shoe, or by the 

 animals lying upon hard pavement, with thin or insufficient 



Here is a veritable pathological resemblance. The disease in a horse's foot, 

 called '' corn," is quite another thing. 



