18 Diseases of Poultry 



is a corrosive substance, being in this respect not unlike 

 carbolic acid. It should, of course, be handled with great 

 care and the pure cresol should not be allowed to come in 

 contact with the skin. If it does so accidentally the spot 

 should be immediately washed off with plenty of clean water. 

 The price of commercial cresol varies with the drug market. 

 It can be obtained through any druggist. In purchasing 

 this article one should order simply "commercial cresol." 



Measure out 3| quarts of raw linseed oil in a 4 or 5 

 gallon stone crock; then weigh out in a dish 1 lb. 6 oz. of 

 commercial lye, or "Babbit's potash." Dissolve this lye in 

 as little water as will completely dissolve it. Start with \ 

 pint of water, and if this will not dissolve all the lye, add 

 more water slowly. Let this stand for at least 3 hours until 

 the lye is completely dissolved and the solution is cold ; 

 then add the cold lye solution very slowly to the linseed oil, 

 stirring constantly. Not less than 5 niinutes should be 

 taken for the adding of this solution of lye to the oil. After 

 the lye is added continue the stirring until the mixture is 

 in the condition and has the texture of a smooth homoge- 

 neous liquid soap. This ought not to take more than a half 

 hour. Then while the soap is in this liquid state, and 

 before it has a chance to harden add, with constant stirring, 

 8| quarts of commercial cresol. The cresol will blend 

 perfectly with the soap solution and made a clear, dark 

 brown fluid. The resulting solution will mix in any propor- 

 tion with water and yield a clear solution. 



Cresol soap is an extremely powerful disinfectant. In the 

 Station poultry plant for general purposes of disinfecting the 

 houses, brooder houses, incubators, nests and other wood 

 work, it should be used in a 3 per cent solution with water. 

 Two or three tablespoons of the cresol soap to each gallon 

 of water will make a satisfactory solution. This solution 

 may be applied through any kind of spray pump or with a 



