186 DISEASES OF ANIMALS. 



her that the tripe was thrown away. That cow, in the 

 first oi' the fall, ran with a horse, and she was frequently 

 licking him, by which she got the eggs into her stomach 

 that produced the bots. Another case of the same kind 

 occurred with a steer that associated with a horse. 



WARBLES, OR GRUBS IN THE BACK. 



In July and August, the CEstrus bovis, or gadfly, de- 

 posits its eggs in the hide, along the back of cattle. In 

 the course of a few months, the grub is developed, and 

 remains in the abscess it has formed in the skin till the 

 spring months, when it escapes from its residence, bur- 

 rows in the earth, changes to a perfect insect, and ther 

 emerges, to pursue the course of its parent. The hea( 

 of the larvae is always towards the bottom of the cyst 

 and the respiratory organs are near the tail, and oi 

 course near the opening in the skin. 



Some suppose that warbles do not interfere with the 

 condition of the animal, and the butcher regards then 

 as a proof of a disposition to thrive. But the effect on 

 the hide is another affair. In tanning, the holes may 

 seem to close. Some nice observers think that they 

 cause great annoyance, fever, and emaciation. 



AVhen the grub is sufficiently grown to have its place 

 known, a little corrosive liquor poured into the hole will 

 destroy it. Perhaps some liniment, or other substance 

 that will not injure the animal, may be used to destroy 

 the grub. Sometimes it may be pressed out. It is said 

 tfiat strong brine will destroy them in any stage. When 

 this fly attacks a herd of cattle, they will stick up their 

 tails, and run as though possessed. 



LICE. 



Remedy. Mix lime and ashes together, and sprinkle 

 the floor, particularly under their fore feet, as it will not 

 be removed in cleaning the floor. 



Another. Grease, fat, lard, or oil, rubbed on cattle, 

 will destroy lice ; but this should not be done in very 

 cold weather, unless they are protectee! as it makes 

 them very cold and chilly. 



