380 CHAPTER 54. 



wliich secrete the skin. Others think that they orij^innte in undue vas- 

 cularity of tlje true skin, l)y means of wliich an abnormal growth is gene- 

 rated. It is certain that after removal they are apt to recur. 



780. Treatment. 



Warts should always be removed whilst yet small. The more common 

 practice is arsenic and lard in the proportion of one drachm of arsenic 

 to one ounce of lard. Two scratches should be made on the wart and a 

 small quantity of arsenic paste applied to the scratches. The wart will 

 fall out in a few days. 



Another j^ood practice is to scrape the surface, and then dress with 

 chloride of lime. 



Some of our best Veterinary Surjreons prefer the knife in all cases, but 

 in some cases there is danfirer of cutting an artery. 



In some cases, when warts, without any appreciable base exist in parts 

 of the ])ody causing them to interfere with the saddlery or harness, it 

 may be necessary to slough them out. 



A thin paste consisting of sulphuric acid and sulphur, spread over the 

 wart will produce the necessary' sloughing process in the course of a few 

 days. The part must be afterwards treated as a simple wound. 



CHArTER U. 



BOTS AND WORMS. 



781. Buh. 782. Tnte&tinal Worms. 783. Treatment. 784. Worm 



in the Eye. 



781. Bots. 



BoTS are the larvte or grubs of the CEstrus or Gad-fly. The eggs are 

 deposited on the legs, arms, knees, or body of the horse during the 

 autumn, and are licked oft" by the animal and hatched in the stomach — • 

 to the cuticular coat of which they cling by two strong hooks or tenacula. 

 Theii- heads, which are situated between these hooks, are buried in the 

 lining of the stomach. They often adhere so tenaciously, that their 

 bodies may be broken, before they will quit their hold. They are some- 

 times found in the villous coat, and they but rarely extend into the duo- 

 denum. The mucus of the stomach seems to be their food. 



About June or July the bots are often voided in the dung, and they 

 then assume the chrysalis or grub form, and remain so for a few weeks, 

 when the case opens, and the fly takes wing. Bots, when being voided. 



