Am.  Jour. 
October 
Pharm.  j 
1919.  / 
Chloretone. 
647 
Germicidal  Experiments 
Typical  Test  of  Phenol. 
Dilution. 
Time  and  Results,  Minutes, 
I-IOO. 
I-IIO. 
I-I20. 
I-I30. 
I-I40. 
+ 
+ 
+ 
+ 
-r 
+ 
+ 
_|_ 
- 
Test  of  Chloretone. 
Saturated  Aqueous  Solution.    (B.  Typhosus.) 
Time  and  Results,  Minutes. 
Dilutions. 
5- 
10. 
15. 
20. 
5  cc.  0.8  per  cent.  sol.  +  0  cc.  water  
— 

9  cc.  0.8  per  cent.  sol.  +  1  cc.  water  
8  cc.  0.8  per  cent.  sol.  +  2  cc.  water  
+ 
+ 
7  cc.  0.8  per  cent.  sol.  +  3  cc.  water  
+ 
i 
i 
6  cc.  0.8  per  cent.  sol.  +  4  cc.  water  
+ 
■  i 
+  means  growth. 
—  means  no  growth  in  subculture. 
Staphylococcus. 
Min. 
10  Min. 
15  Min. 
20  Min. 
0.8  per  cent,  solution 
Spores  of  Hay  Bacillus.    (B.  Subtilis.) 
1  Hr. 
2  Hr. 
3  Hr. 
4  Hr. 
0.8  per  cent,  solution  
+ 
+ 
-f 
Mould  Spores. 
1  Hr. 
2  Hr. 
3Hr. 
4Hr. 
+ 
+ 
Such  a  solution  can  be  obtained  by  adding  the  chloretone  in  a  sat- 
urated alcoholic  solution,  by  heating  the  chloretone  in  water,  or  by 
allowing  several  days  for  complete  saturation. 
As  a  preservative  against  mould  spores  it  has  not  proved  en- 
tirely satisfactory  for  serums  and  heavy  organic  solutions.  The 
strains  used  in  this  experimental  work  have,  however,  invariably 
