DI8KASKS (»i" rm: ji ii.ock. ankle, and foot. 421 



div l>o.\-. Tho iliessings iwv to be ohnnjretl daily or even twice a 

 day at Hrst. A>'lu'n they are removed, all pieces of new horny mat- 

 ter which are now lirndy adherent mu.^t he rnbbod oM' with tlie fin- 

 jrer or a tcnl of oakiuii. A> the secretion diminishes, dry powders, 

 such as calomel, sulphates of iion, cojiper. etc.. may piove of most 

 advanta<;e. The sulphates should not he used pure, hut are to be 

 mixed witii powdered animal charcoal in the proportion of one of 

 the foinier to eijrht or ten of the latter. A\'heu the soft tis>ues are 

 all horned over, the dre.ssin«rs should i)e continued for a time, weak 

 solutions heinjj used to prevent a re<Mirrence of the disease. If the 

 patient is run down in condition, bitter tonics, such as <j;cutian. 

 nujy Ik? jjiAcn in 'i-dram doses twice a day and a libeial diet of 

 <;rain allowed. 



CORNS. 



A corn is an injury to the li\"in«x hoin of the foot. iuvolviii<; the 

 soft tissucf beneath, whereby the capillary blood vessels are ruptured 

 and a siiKill <|nantity of Mood escajjcs which, by permeating the hoi-n 

 in the immediate nci^hi»oiliood. stains it a dark color. Tf the injury 

 is continuously ici)eated. the hoin becomes altered in chai'actei' and 

 the soft tissues may sujtpuratc or a horny tumor de\elop. Corns 

 always api>ear in tlie sole in the anjrle l)etwcen the bar- and the 

 outside wall of the hoof. In many cases the lamina' of the b:ir. of 

 the wall, or of both, are iuNohcd at the same time. 



Tliree kiiuls of coins are connnonly reco«rni/ed^the dry, the mi)ist, 

 and the suppurative — a di\isiou ba.si'd solely on the chiirMctcr of the 

 conditions which follow the piim:iry injury. 



The fore feet are almost e.\clusi\i'ly the subjects of the disease, for 

 two reasons: First, becau.se they sup[)oi't a •greater ])art of the body: 

 secondly, becatise the heel of the fore foot during progression is fii*st 

 placed upon the giound. whereby it receives much more concussion 

 than the heel of llie liind fool, in \\lii<-h the loe lirst striixcs the 

 ground. 



CaufU's. — It may be said thai :ill feet are exposeil U) corns, :in<l lh.it 

 even the best feet may sutler from them when conditions necessary to 

 the production of the peculiar injury aie j)resent. The heavier 

 bleeds of horses generally used for heavy work on rough roads and 



streets seem to be UJOst ll;il)li- to tbiv tioiibli' A[iilc< r;irel\" IlM\"e 



corns. 



Among the cau.scb and c<»ndilions which piedisp<(se to corns may 

 be named high heels, which change the natural relative position of 

 the bones of the foot and thereby increas*> the concu.>^sion to which 

 these i)arts art' subject: contiacted heels, which in ))ai't destioy the 

 ela.sticity of the foot, increa.se the pressure upon the soft tissues of 

 the heel, and render lacerations more easy: long feet, which by 

 removing the frog and heels too far from the ground tlejirivc them 



