336 INSECTS AFFECTING STOCK AND POULTRY 



Treatment of Wounds. Wounds on stock should be quickly 

 dressed with weak carbolic acid. Use one part of carbolic acid to 

 thirty parts of water. Then coat them with tar (U. S. Depart- 

 ment of Agriculture). If eggs are already in the wounds, they 

 should be removed carefully, the wounds washed with the above 

 carbolic acid solution, and dressed with tar. 



Mange. This disease is caused upon various animals, horse, 

 cow, sheep, wolf, hog, dog, and other animals, by different varieties 

 of minute mites, not insects. A common species is known as 

 Scaroptes scabiei Latr. This mite (Fig. 337) occurs on man to a 

 certain extent. It is commonly called the "itch mite," and its 

 burrowing in the skin causes intense irritation and loss of hair 



FIG. 337. Itch-mite of man, male, greatly 

 enlarged. (Lugger.) 



FIG. 338. Mange-mites of the horse, 

 male and female, much enlarged. (After 

 Meguin.) 



on the affected parts. Figure 338 is a mite which causes mange 

 on the horse. Figure 339 is a similar pest working on the dog. 

 Figure 340 is a mite causing foot mange on the horse. 



Control. It can be controlled by the various dips and washes 

 used against scab, ticks, and lice. Anointing the affected parts 

 with lard and sulfur has given good results. Hot water and zeno- 

 leum may be mixed at the rate of fifty parts of water to one part 

 of zenoleum. Allow it to cool before using. The cost of spraying 

 cattle with this is about three or four cents per head. A mixture 

 of zenoleum and lard is also recommended. Adding powdered 

 sulfur to the zenoleum and lard will increase the efficacy of the 

 mixture. 



Chicken Scab. This is often called scaly legs in fowls. It 

 is caused by one or more species of mites which attack the combs 



