BOTS OR GRUBS. 119 



It is proved beyond doubt, by experiments made, 

 that this worm, like the caterpillar, undergoes several 

 changes. It is originally a fly, which deposits its 

 eggs in the horse's coat, causes an itching, and induces 

 him to bite the part. In this way he swallows the 

 eggs, which by the heat of the stomach are brought 

 into life, and are sometimes so numerous as to eat 

 their way entirely through the stomach and destroy 

 the animal. Indeed they seldom fail to attack a horse 

 with great violence, whenever his stomach is empty, 

 and endanger his life. 



Numberless experiments have been made upon the 

 grubs, after they have been taken from a horse that 

 had died, to discover what medicine would soonest 

 destroy their lives, that could be safely given. But all 

 endeavours as yet upon that subject, have been fruit- 

 less. It appears that they will live in any medicine 

 that can be given to a horse, nearly as long as they 

 can live without eating. All the benefit that results 

 from experience on this subject, to me, merely serves 

 to break the hold and expel those dangerous worms, 

 when they are so mischievously engaged. 



x 



After describing the symptoms attending the grubs, 

 I shall offer some remedies which have saved the lives 

 of many horses. 



Symptoms. A horse attacked by the grubs, fre- 

 quently lies down and looks round to his shoulders, 

 groans, whips his tail between his hind legs, frequently 

 turns up his upper lip, and has a very hot fever, which 

 may be discovered by feeling his ears. 



REMEDIES. No. 1. Take of copperas two table 

 spoonfuls; water milk warm, one pint; dissolve the 



