THE DISEASES OF CATTLE. 805 



give rise to tumors on the back and other parts, in which the 

 larvae become developed. Thej live there on the succulent fluid 

 which the soft parts secrete, and make their escape thence in 

 the following spring, in order to become metamorphosed. The 

 greater the number of tumors, the more is the strength of the 

 animal diminished by the pain and suppuration. For this 

 reason we should endeavor to free the animal, as soon as possi- 

 ble, from these larvae pests, by frequently washing these tumors 

 with camphorated brandy, or forcibly compressing them, which 

 either crushes the insect or forces it to make its exit. When 

 they have attained the size of a filbert, an incision must be 

 made into the part, which is then to be covered with a pitch 

 plaster. A few doses of sulphur are to be given internally. 

 We are told that those oxen which have taken sulphur for a 

 long period of time, are not infested by gadnies." 



YOKE GALLS. 



The exciting cause o^yoke gaUs is local irritation occasioned 

 by the yoke. 



Treatment of Yoke Galls. — So soon as an abrasion is dis- 

 covered on the neck, the animal should be excused from duty 

 for a few days ; the abraded part should be lubricated two or 

 three times daily, with a small quantity of glycerine. In most 

 cases, however, a few applications of tincture of aloes and 

 myrrh will produce a healthy action, and thus restore the 

 parts to soundness. Should there be no abrasion, yet some 

 tumefaction, heat, and tenderness, a cold water bandage, renewed 

 as occasion seems to require, will in most cases have tne de- 

 sired effect. Occasionally the integuments are so bruised as to 

 induce induration — hardening. Local induration in the neck 

 is a morbid condition of parts, known to the farriers of old as 

 *' sit-fast." The treatment consists in smearing the part with a 

 portion of the following : — 



^ Iodine, | drachm. 



Simple Ointment, 7 dirachms. 



Powdered Bloodroot, ^ drachm. Mix. 



A few applications of a portion of the above, will have the 



