500
The following conclusions were drawn :—-
(1.) Odamine as a disinfectant is not so effectual as Lysol in killing the
plague bacillus.
(2.) The disinfectant power of Odamine is somewhat weaker than that of
Jeyes' Fluid.
The general results of my experiments showed that no advantage was to be gained by the wholesale use of Odamine. It was found to be less effectual as a germicide than Jeyes' Fluid which is generally employed in Hongkong as a disin- fectant and deodorant.
J
Disinfectol. This is a Japanese product and prepared by the Formosau Gov- ernment. It is a thick fluid of dark brown colour. It has a pleasant smell. mixed easily with water forming a milky coloured fluid. It is strongly alkaline in
reaction.
In examining this preparation the usual bacteriological technique was en- ployed. Solutions of different strengths of Disinfectol were prepared and brought into contact with living micro-organisms growing on solid and liquid nutrient
media.
The following is a resumé of my results:—
TABLE NO. 1.
Tests on Solid Media.
!
Bacillus
Strength of
Solution.
Staphylo Coccus.
Bacillus Typhosus.
Bacillus Coli.
Anthracis (Sporing.)
Bacillus Pestis.
%%
30' +
5' +
5' +
5 days +
5' +
25′ 0
6' 0
10' 0
1 week U
6' V
1%
15′ +
3' +
5'
20' 0
5' 0
6' 0
+o
Do.
1' +
Do.
20
5%
10' +
1' +
3 days +
30" +
12′ 0
2' U
1.′ 20′′ 0
4 days 0
1' 0
10%
l' +
2/0
30" + 10
Mcment
24 hours +
Moment +
1' 048 hours 0
30" 0
† Alive.
0 =Dead.
TABLE No. II.
Tests on Fluid Media.
Strength of Solution.
Bacillus Typhosus.
Bacillus Pestis.
1%
5' +
3' +
5'. 30" 0
4' 0
1%
2 +
30′′ +
3' 0
1' 0
5%
30' +
Monent +
1' 0
30"