770 



A MANUAL OF BACTERIOLOGY 



Carbolic Acid Coefficients obtained by the. Rideal- Walker 

 Method l (p. 774) 



* The germicidal efficiency of these substances has been increased since 

 the date of the experiments recorded, and they now have a carbolic -acid 

 coefficient of from 16 to 20-22. 



standing. Lysol is mainly a solution of the cresols in fat 

 or linseed oil, saponified, with addition of alcohol. It 

 gives a clear solution with water, having slightly less 

 efficiency on naked bacteria than cresol, much superior 

 solvency for grease, and equal sensitiveness to albu- 

 minoids. A number of proprietary disinfectants of high 



1 Fowler, Journ. Roy. Army Med. Corps, July, 1907. 



