DISINFECTING PROPERTIES OF CARBOLIC ACID. 
685 
control plate, 312; immediately, o; 5 minutes, o; 10 min¬ 
utes, o. Counted after 72 hours. 
Plate X.—September 23, bouillon culture 48 hours old ; 
control plate, 830 ; immediately, 2 ; 5 minutes, o ; 10 minutes, 
o. Counted after 72 hours. 
Plate XI.—September 23, bouillon culture 3 days old ; 
control plate, estimated at 1,553; immediately, 942; 5 min¬ 
utes, o ; 10 minutes, o. Counted after 48 hours. 
Series II. 
Throughout this series the organisms were exposed to 
a one and one-half per cent, solution of acid. This was pre¬ 
pared as follows : To 94.5 cc. of distilled sterilized water, ij 
cc. of the acid was added; after the acid was thoroughly dis¬ 
solved 24 cc. of the solution was measured into a test tube, 
and 1 cc. of the bouillon culture of aureus was added. 
Plate I.—September 24, bouillon culture 48 hours old ; 
control plate, 253; immediately, 3; 5 minutes, o; 10 min¬ 
utes, o. Counted after 48 hours. 
Plate II.—September 24, bouillon culture 48 hours old ; 
control plate, 296 ; immediately, 10 ; 5 minutes, o ; 10 min¬ 
utes, o. Counted after 48 hours. 
Plate III.—September 26, bouillon culture 3 days old ; 
control plate, too many to count; immediately, 630; 5 min¬ 
utes, o ; 10 minutes, o. Counted after 48 hours. 
Plate IV.—September 30, bouillon culture 48 hours old ; 
control plate, 367; immediately, 1 ; 5 minutes, o; 10 min¬ 
utes, o. Counted after 72 hours. 
Plate V.—September 39, bouillon culture 3 days old ; 
control plate, 426; immediately, 2; 5 minutes, o; 10 min¬ 
utes, o. Counted after 72 hours. 
Plate VI.—September 30, bouillon culture 3 days old ; 
control plate, 207; immediately, 109; 5 minutes, o; 10 min¬ 
utes, o. Counted after 72 hours. 
Plate VII.—October 3, bouillon culture 48 hours old; 
control plate, 207; immediately, 21; 5 minutes, o; 10 min¬ 
utes, o. Counted after 72 hours. 
Plate VIII.— October 3, bouillon culture 14 days old; 
