u 
a box 15 by 15 by 15 inches. Fresh moist cultures ou slips of filter 
paper. Box opened after twenty-four hours’ exposure. 
Layers of blankets. 
Typhoid. 
Anthrax 
spores. 
Diph- 
theria. 
1 
O 
3 
A 
— 
-f 
+ 
5 
"T~ 
— 
“T E 
Controls 
- 
~T 
- j 
In the foregoing four exi^erimeuts, Kos. 10, 11, 12, and 13, the blankets 
were dry. The small amount of formalin used failed to kill diphtheria 
through 1 layer. In the following experiment, No. 14, the blankets 
were moist, the other conditions remaining the same : 
No. 14. 
Six-tenths cubic centimeter per square foot, moist blankets, twenty- 
four hours. 
One cubic centimeter formalin sprinkled on moist blanket at bottom 
of a box 15 by 15 by 15 inches. Fresh moist cultures on slips of filter 
paper placed between layers of moist blankets. Box opened after 
twenty- four hours exposure. Blankets still moist. 
Layers of blankets. Ty-phoid. 
Diph- 
theria. 
1 + 
1 
0 

' 3 4- 
4 -f 
5 -f 
1 
J 
-f 
Controls -f 
-f 
In this experiment (No. 14) we have an irregular result. Small 
quantities of formalin produce irregular results in almost all the pub- 
lished works on this subject. 
We may, therefore, conclude from the foregoing tests that small 
quantities of formalin sprinkled on blankets and sheets have practically 
no disinfecting power in a closed container, excepting on the spot where 
the solution falls, after twenty-four hours’ exposure. 
SPEIXKLING DILUTE FOEMALIN OX BLAXKETS AXD SHEETS — TIME OF 
EXPOSUEE, TWENTY-FOUE HOUES. 
Small quantities of formalin having very little effect the next series 
of experiments were designed to determine whether small amounts of 
formalin diluted and well sprinkled would aid the evolution and pene- 
tration of the gas. Observations Nos. 15, 16, 17, 18, and 19 were made 
with 1 c. c. of formalin diluted with 4, 5, 10, 15, and 25 cubic centi- 
meters of water, respectively. 
