DISEASES AND INJURIES OF THE LEGS. 189 



Biniodide of mercury 3 i. 



Water 3 xij. 



Iodide of potassium, suflficient to dissolve the biniodide. 



This is to be applied once or twice a day until slight soreness is pro- 

 duced, and reapplied when the soreness disappears. If possible, the 

 horse should be turned out to grass, or kept in a thickly bedded box dur- 

 ing treatment. 



CAPPED ELBOW. 



Definition. — Is a serous abscess or soft tumor, formed by an effusion 

 of serum into the areola of the connective tissue of the elbow. 



Etiology. — These unsightly tumors are caused by the horse lying 

 upon the heels of his shoes which will usually be found to be longer 

 than they should be. 



Fig. 95. 

 'Capped elbow. 



Symptoms. — The only sign of this deformity is that afforded by the 

 swelling of the tumor itself, (Fig. 95 .) 



Treatment. — First see to it that the shoes are properly made, and 

 then tie up the foot which causes the trouble, every night in old cloths. 



The best mode of removing the tumor is by puncture; the cavity after- 

 wards should be injected with a solution of: 



