180 DISEASES OF 



In short-haired animals it is comparatively easy to get 

 rid of lice. In animals with long hair a cure will be 

 greatly expedited if the hair is removed. This will also 

 prevent the nits from having a suitable place for depo- 

 sition. The use of DR. HEARD'S MANGE CURE of the 

 strength of a tablespoonful to a pint of warm water, will 

 kill the lice, but it will be necessary to repeat the treat- 

 ment about every 4 days to destroy the parasites that 

 have been hatched since the last application. When a 

 large number of animals are the subjects of a plague of 

 lice, it will be advisable to disinfect the stables or 

 buildings by washing either with 5 per cent creoline so- 

 lution or with pure vinegar once a week for 3 or 4 

 weeks. A decoction of 3 ounces of tobacco, boiled in a 

 quart of water, is also a good remedy when applied 

 every 4 days. 



SCAB, ITCH, MANGE. 



These parasites are a very serious scourge to some of 

 the domestic animals, especially to sheep. Man is also 

 occasionally the subject of this pest, in whom it is quite 

 difficult to cure. Drawings of the insects which cause 

 mange in the horse, scab in sheep and itch in man are 

 seen in Figs. 79, 80 and 81. 



It will be seen that they are all supplied with a boring 

 apparatus at the point of the head, and also suckers at 

 the ends of the extremities or legs. These suckers are 

 especially brought into use when the female enters the 

 skin, for only the female enters it. They hold the in- 

 sect fast to the skin, and the point of the nose is pushed 

 through in much the same way that a mole enters a 

 burrow in the ground. Once inside the outer skin, the 

 burrowing continues. The eggs are gradually de- 



