DISEASES OF THE DIGESTIVE ORGANS. 221 



object, by way of prevention, is to give tone to the digestive or- 

 gans ; and soon after the worms have congregated in the intestinal 

 -canal, bitter tonics and alteratives are obnoxious to them. They 

 then die, are digested, and pass from the anus as fecal matter. 



Suppose we give the infested horse powerful purges, tartar 

 emetic, calomel, turpentine, etc., as the books recommend. We 

 may succeed in their expulsion, but that does not mend the mat- 

 ter for the agents just named are all more or less prostrating, 

 and create a worse state of digestive derangement than that which 

 previously existed, and soon, by virtue of spontaneous generation, 

 a new crop of parasites make their appearance. 



When a horse shows any of the symptoms here alluded to, in- 

 dicating indigestion, or the actual presence of worms, I recommend 

 that an occasional dose of the following be given : 



No. 27. Powdered poplar bark (populus tremuloides). ~\ 



Powdered sulphur [ equal parte. 



Powdered salt 



Mix. 



Dose, one table-opoonful, to be mixed with bran or oats. 



EXAMPLES OF VEEMIFUGES. 



No. 1. — Fluid extract of wormwood, four drachms ; to be given 

 in the morning, before feeding time, for several successive days. 



Xo. 2. — Give one ounce of fluid extract of pink-root, every 

 morning, before feeding, for a week. 



A GOOD REMEDY FOB THE TAPE-WORM. 



Give four drachms of the solid extract of male fern (aspidium 

 felix mas) every other morning, during a period of about ten days. 

 This is said to be a specific for tape- worm. 



Finally, as regards the treatment of worms, Nature has endoweJ 

 these parasites with such tenacity of life, that no matters knowr 

 to us will effect their destruction, though a few may answer tht> 

 purpose of their expulsion. Bots are so hardy as apparently to 

 survive immersion in oil, in alcohol, spirits of turpentine, and 

 even powerful solutions of mineral acids. The continued use of 

 salt, mixed with the food, appears, however, obnoxious to them ; 

 for sometimes, under its use, their hold gives way, and they are 

 ejected Bitters, purgatives, and the mechanical irritation of 



