The results were as follows : 
Linen. 
■H 
Wool. 
V 4 Time. 
Moist. 
Dry. 
Over 
H2SO4 
Time. 
Moist. 
Dry. 
Over 
H2SO4 
1 
-1- 
+ 
20 davs 
4. 
+ 
4- 
S H«vs 
2.5 days 
4- 
+ 
4 dftvs 
+ 
t 
30 days 
+ 
8 days 
+ 
« 
40 days 
+ 
12 days 
50 days 
16 days 
+ 
+ 
60 days 
Silk. 
Time. 
Moist. 
Dry. 
Over 1 
H2SO4 I 
Time. 
Moist. 
Dry. 
Over 
H2SO4 
1 day 
-f 
-f 
20 days 
3 days 
+ 
-1- 
25 days 
4 days 
; 
+ 
30 days 
8 days 
+ 
' 
40 days 
I 
12 days 

50 days 
. 
16 days. 
. + 
60 days 
It is seen, therefore, that the pest bacillus remains on fabrics quite a 
long time. In this respect it resembles the bacillus typhosus. 
I He draws the following conclusions : The pest bacillus has little resist- 
■ 'ance against drying. It can, therefore, not easily be carried in the dust 
or air. It is, therefore, not likely, if not impossible, that the disease is 
spread in the air. However, it may often occur that infection takes 
place through contact because the organism lives when not wholly dried. 
Therefore, infected clothing may be very dangerous. 
