Entozoa (Worms) 295 



many of which are quite useless and ought not to 

 be used. An anti-worm remedy that combines ver- 

 micide and purgative properties is the most useful, 

 but at the same time its value is materially enhanced 

 if it has the power of being equally destructive to 

 both tape-worms and round-worms. Santonin is 

 regarded as the remedy par excellence for round- 

 worms, but it requires to be given in combination 

 with a purgative, for which purpose castor oil is a 

 very suitable medium. Eight grains of santonin, 

 in conjunction with a couple of ounces of castor oil, 

 is a suitable dose for a full-grown hound, whilst for 

 hound puppies five grains of santonin and one ounce 

 of castor oil, repeated at intervals of ten days, does 

 ^^ery well. Five grains of thymol, dissolved in a 

 dessertspoonful of spirit and given with an ounce of 

 castor oil, can be used for the same purpose. Areca 

 nut, kamala, quassia, turpentine, Hquor extract of 

 male fern, camomile, etc. etc., are the remedies com- 

 monly used for the treatment of tape-worms. The 

 following powders will be found suitable for hounds : 



Mix thoroughly, and then divide into 15 powders. 

 Give one powder to each full-grown hound, either 



