8O NEW YORK STATE MUSEUM 



Mercurial ointment diluted with I or 2 parts of vaseline was 

 most effective when applied under the anus or vent, though a 

 portion about the size of a pea could be rubbed into the base of 

 the feathers. 8 



A 2 per cent chlorine solution and one-half pint of gasoline 

 mixed together and then as much air-slaked lime poured into the 

 liquid as it will take up, stirring thoroughly during the addition, 

 makes a good lice powder. 9 



Mange produced by parasites is contagious and may spread 

 directly from one animal to another, or indirectly by means of 

 litter, rags, bandages, harness, stalls, stablemen and their clothing. 

 The parasite may live away from the animal for some weeks. 10 The 

 following treatment is recommended: 



Two pounds of burnt lime is gradually slaked with cold or hot 

 water; 3 gallons of water is then added with continuous stirring. 

 After allowing the lime to settle, the 3 gallons of liquid are drawn 

 off and diluted with an equal quantity of water, and 6 gallons of 

 petroleum then added. For animals with sensitive skins use even 

 half or less the amount of petroleum. Store the liquids separately 

 and mix just before using, rubbing the preparation into affected 

 parts, which latter should have been previously shaved. 11 



It is possible to destroy parasites on various animals by fumi- 

 gating them with an atmosphere saturated with nitrobenzine. 

 Treatment of an hour and a half destroyed the parasites on a dog, 

 while sheep with very close wool were freed from 90 per cent of 

 the ticks after a 12-hour fumigation, those which remained in the 

 wool perishing, while some which escaped to the floor revived sub- 

 sequently. Texas cattle fever ticks are killed after an exposure of 

 12 hours. At 83 F. one drop saturates a cubic foot of air, while 

 at 40 F. only one-tenth of a drop is necessary. 12 Subsequent work 

 has shown that animals may succumb to this treatment, and it is 

 therefore not entirely safe. 



8 Lam son. Jour. Econ. Ent., 10:71-74. 1917. 



9 Tex. Dep't Agr. Bui. 35, p. 37. 1914. 



10 Bd. Agr. & Fish., London, Leaflet 274. 1913. 



11 Richter. Deutsch. Tierartzl. Wochenschr., Hanover, 24:429-30. 1916. 



12 Moore. Jour. Econ. Ent, 9 71-80. 1916. 



