46 POULTRY DISEASES 



Itching is present and the birds may pick at the 

 affected parts. Itching is more intense at night. 

 The birds may become weak, stop laying and even 

 die from the effects of the irritation and loss of 

 rest. 



Treatment: Eradication. — The scabby patches 

 should be soaked with soapy water till the scabs 

 can be easily removed (this will take time, but in 

 valuable birds it will pay; if insufficient value to 

 justify this expenditure of time and labor, kill 

 the bird and burn the affected parts, the legs and 

 feet). After removal of all scabs possible, scrub 

 thoroughly with kerosene or kerosene emulsion, 

 using a nail brush and taking pains to make cer- 

 tain that the liquid reaches the deepest parts. 



Kerosene emulsion is made as follows: Kero- 

 sene (coal-oil) one-half gallon, common soap, two 

 ounces, water, one quart. Dissolve the soap by 

 boiling in the water, add this solution, boiling 

 hot, to the kerosene and stir with an egg-beater, 

 or otherwise violently agitate. When ready for 

 use take one part of the emulsion and add to this 

 nine parts of water. 



Lime-and- sulphur dip. — This well-known para- 

 siticide used warm and scrubbed thoroughly under 

 the scales is very effective. The lime and sulphur 

 dip is made as follows : Unslacked lime, one-third 

 of a pound, sulphur, one pound, water, four gal- 

 lons. This mixture should be boiled for two hours 

 and the amount lost by evaporation made up by 

 adding water. The lime acts as a solvent for the 

 sulphur ; the dissolved sulphur is a valuable para- 

 siticide. 



Commercial Disinfectants. — Five per cent solu- 

 tion (in water) of creolin, zenoleum, or kreso dip 



