DISEASES OF THE FETLOCK , ANKLE, ANl> FOOT. 445 



feel l)ecoine simply tlie fulcra of ihe levers of piofri'ossioH. and arc 

 almost exempt from eoiiciissioii. 



One foot. — Injiiries and excessive functional j)erformance are the 

 causes of the disease in only one foot. The jreneral symptoms, as a 

 rule, are not severe, tlie.*e beinj; often no loss of appetite and no un- 

 usual thirst, while the pulse, temperature, and respiration remain 

 ahout normal. The Mei<rht of the body is early thiown upon the op- 

 posite foot, and {\w aH'ected one is extended, I'epeatedly raised from 

 the fiooi*, and then carefully replaced. AA'hen made to move forward 

 the lame foot is either carried in the air while i)roj;ression is accom- 

 l)lished by hopi)in«r with the healthy one, or else the heel of the Hr.st 

 is ])laced upon the <ri(nnui and receives little weijrht while the sound 

 limb is (piickly advanced. Projrression in a straight line is moi-e 

 easy than turnin«r towaid the lame side. 



liofJi fare feet. — AN'hen both fore feet are affected the symptoms 

 are well mai'ked. The lameness is excessixe and the animal almost 

 immovable, ^^'hen standing: the head han«;s low down, or rests ujxm 

 the manger as a means of su|)port and to relieve the feet; the fore 

 feet are well extended so that the weijjht is thrown upon the heels, 

 where the tissues are least sensitive, least inflamed, and most capa- 

 ble of relief by free effusion. The hind fv-et ai*e brou<jht forward 

 beneath the body to receive as much weij;rht as possible, thereby re- 

 lie\ in<j: the diseased ones. If projjression is attempted, which rarely 

 haj)pens voluntarily duiing the first three or four days, it is accom- 

 ])lished with very great j^ain and lameness at the starting, which 

 usually s\ibsides to an extent aftei- a few minutes" exercise. During 

 this exercise, if the animal happens to .step upon a small stone or 

 .other hard substance, he stumbles painfully and is excessively lame 

 in the <)fl'ended nu-mber for a number of steps, ov\ing to the acute 

 pain which piessure upon the sole causes in the tissues beneath. The 

 manner of the progression is pathognomonic of the comi)laint. 

 Soui','times the affected feet are simultaneously raised fioui the 

 gi'ound (the hind ones sustaining the weight), then advanced a short 

 distance and carefidly replaced: at almost the same moment the hind 

 oiu's are «|uickly shutllcd foiwaid near to the center of gi ax itation. 



Tn other inst'inces one foot at a time is advanced and placeil with 

 the heel u|)on th«' ground in the sjime carefid manner, all cau.ses of 

 <oncussion being cart'fully axoided. In attempting to back the ani- 

 mal he is found to be almost stationary, simply swaying the body 

 Itnckward on the haunches and elevating the toes of the disea.sed feet 

 as they rest upon their heels. In attempting to turn either to the 

 right or left he allows his head to be drawn to the one side to its full 

 extent U'fore mo\ing. then makes his hind feet the axis aiound 

 which the forward ones describe a shuffling circle 



