128 



CYCLOPEDIA OF LIVE STOCK AND COMPLETE STOCK DOClv>R. 



Give as one dose, repeating it morning and night for a week ; then 

 give a purgative of oil and turpentine, as follows : 



No. 84. 



1 Ounce spirits of turpentine, 

 1 Pint raw linseed oil, 

 Mix. 



Give as one dose. 



After three weeks, repeat the entire treatment, to catch the young 

 worms previously left in the bowels, in the form of nits or eggs, and which 

 have hatched since. 



iVrtSrtZ a7ul bronchial acari. — One sort of acarus is found 

 in the nose of the horse, and another, the strongylus micrurus, 

 in the bronchial tubes. They are from one and a half to three 

 inches long. 



II. Bets. 

 The oestrus equi, or horse gadfly, in laying its eggs, 

 attaches them to the hair of the horse, usually on the fore legs 

 and breast, so as to be convenient to the horse's mouth. The 

 horse licks the spot irritated by the fly and thus gets one or 

 more c'-'^s into his mouth ; it is hatched by the heat and moisture, passes 

 down the o-ullet, and attaches itself to the coat of the stomach by two little 

 booklets on the head, and there hangs for several months, 

 as yet not having tlie power to let go. This is one of 

 the stages it has to go through, to become a fly. When 

 it has matured, it lets go, and soon passes out with the 

 duno-. It then hides itself in the earth, 

 to undergo another change, and after six or ^MMttj^ 

 seven weeks' growth, in the pupa condition, ^^B^^ 

 THE GADFLY. emcrgcs a full fledged gadfly, cap«])le of ^ ^°^* 



annoying many horses and propagating its species indefinitely. 



PEUTASTOMA 

 TCENOIDES. 



Acarus which 

 lives in the nose. 



I. Female fly about to deposit an egg, 



3. The egg magnified. 



3. The bot. 



^^B 4. The chrysalis. 



^^ 5. The male fly. 



THE GADFLY, AT VARIOUS STAGES OF DEVELOPMENT. 



The bot sucks liquid nourishment from the food of the horse, and 



