20 
PLAGUE CL'LTURE ON FLANNEL. 
Plague does not live long on flannel. 
Small pieces of flannel were sterilized and saturated with a four- 
day-old bouillon culture of plague and left to dry under various 
temperatures. 
No. 23 . — Plague on Flannel, Daek Room, 22 ° to 29° C. 
Time. 
Result. 
Remarks. ^ 
.3 davs 
9 days 
— 
19 days 
- 
No. 24 . — Plague on Flannel, Cold Chamber, 17° to 19° C. 
Time. 
Result. 
Remarks. 
: 
3 days 
_L 
8 days 
— 
19 days 
— 
• 
No. 25. — Plague on Flannel, Incubator, 37° C. 
Time. 
Result. 
Remarks. 
3 days 
J_ 
9 days 
— 
! 19 days 
1 
— 
PLAGUE ON SPONGE. 
Plague was kept alive a long time on sponge, in one instance one 
hundred and twenty-five days at 17^ to 19^ C. However, it lost its 
virulence for mice long before that time. In one instance the organ- 
ism retained both its vitalitv and its virulence eightv davs. 
