520 DISINFECTION 
It should be applied in quantity sufficient to thoroughly wet all parts 
and soak deep into the cracks and crevices if there are any. 
Chlorinated lime. Five ounces of chloride of lime to a gallon of 
water (4 per cent). This should be applied in the same way as the 
corrosive sublimate. 
Cresol. The commercial cresols guaranteed to contain more than 
90 per cent. of cresylic acid are relatively cheap and well suited to the 
disinfection of cars, barns, and yards. For general disinfection a 1.5 to 
2 per cent. solution of cresol in water should be used, allowance being 
made for the impurities when the cheaper grades are employed. 
Cresol is not easily soluble in water; therefore, in preparing solutions 
warm water should be used and care taken to see that all is dissolved 
before applying the solution. A 2 per cent. solution of cresol is 
regarded as being a more efficient disinfectant than a 5 per cent. solu- 
tion of carbolic acid and should be applied in the same way. 
Compound solution of cresol. ‘“This preparation, known as liquor 
cresolis compositus, United States Pharmacopceia, is recognized as 
official by the last edition of the United States Pharmacopeceia, and is 
a mixture of equal parts of cresol (U.S. P.) with a linseed-oil-potash 
soap. The mixture is a thick, dark, amber-colored fluid which mixes 
readily with water in all proportions to form.a clear soapy solution. 
A very efficient disinfectant may be made from the commercial 
cresols or liquid carbolic acids of known strength by mixing these with 
the soap described in the United States Pharmacopceia under the 
heading Liquor cresolis compositus. When other than United 
States Pharmacopceia cresol is used a sufficient excess must be added 
to insure 50 per cent. of actual cresylic acid in the mixture. Com- 
pound solution of cresol is recommended for use as a general disinfect- 
ant in a 3 to 4 per cent. solution in water. In this strength it will 
accomplish the same results as a 1.5 to 2 per cent. solution of cresol 
and may be applied in the same manner as a 5 per cent. solution of 
carbolic acid. 
“It may be said in favor of the compound solution of cresol that it 
possesses all the advantages of cresol, and in addition is far more 
readily soluble. It is, however, somewhat more expensive, than 
cresol, owing to a stronger solution being required; this is in great 
measure compensated for by its ready solubility.” 
A mixture of crude carbolic and sulphuric acid. The following 
disinfectant has been found to be very serviceable. It is not poison- 
