Medicine - Institutions > Army health reports and medical documents > Scientific memoirs by officers of the Medical and Sanitary Departments of the Government of India > Number 38 - Preliminary report on the killing of rats and rat fleas by hydrocyanic acid gas > Preliminary report on the killing of rats and rat fleas by hydrocyanic acid gas
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20
Experiment V.
With Clothes in Boxes.
Same period of exposure 20 minutes. The same amount of hydrocyanic
acid gas (about 4.38 cubic feet) as in Experiment III was introduced into the
room of 830 cubic feet capacity by means of a fan.
Box I, from above downwards.
PARTICULARS. | Result. | REMARKS. |
1. Rug and chudder, then cotton bag with 10 fleas in it. |
10 fleas; all dead. | |
2. Then durree and 2 blankets with bag of 7 fleas below. |
7 fleas; all dead. | |
3. Then one blanket, with bag of 9 fleas below. |
9 fleas; all dead. | |
4. Then a blanket in several folds and a bag with 7 fleas below it. |
7 fleas; all dead. | |
5. Then another blanket with 9 fleas below in a bag. |
9 fleas; all dead. |
Box II.—Two pipes were led into Box II, from above downwards.
PARTICULARS. | Result. | REMARKS. |
(a) Pillow, then 10 fleas in bag | 9 dead; 1 just feebly living. |
The pipes were led into foot of box. Those fleas which were found "feebly living" at the end of experiment remained so for 1½ hours after the experiment. |
(b) One rug and 9 fleas in bag below it. |
6 dead; 3 feebly living. |
|
(c) Then rug and blanket with 8 fleas in bag. |
8 dead, all. | |
(d) Then rug and pillow with 10 fleas in bag below. |
10 dead, all |
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