Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Surbiton]
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Area JE | 3rd Maintenance treatment | No. of manholes showing takes of poison bait | 4th Maintenance treatment | |||
---|---|---|---|---|---|---|
No. Manholes pre-baited | No. of manholes showing takos of pre-bait | No.of manholes pre-baited | No.of manhole s showing takes of pre-bait. | No. of manholl showing takes 1 of poison bal | ||
1 | - | - | - | - | - | - |
2 | 18 | 15 | 9 | 15 | 13 | 8 |
3 | — | - | - | - | - | |
4 | - | - | - | - | - | - |
5 | - | - | - | - | - | - |
6 | 32 | 20 | 10 | 20 | 7 | 5 |
7 | — | — | - | |||
8 | 1 | 1 | Nil | 1 | Nil | - |
9 | 7 | 5 | 2 | 5 | Nil | - |
. | 58 | 41 | 21 | 41 | 20 | 13 |
In December an annual test baiting of the Corporation's sewers was carried out the results being as follows:-
Area X | No . of manholes test baited | No. of manholes showing partial takes of test bait | No. of manholes showing complete takes of test bait | No.of manholes showing no take of test bait. |
---|---|---|---|---|
1 | 16 | - | - | 16 |
2 | 21 | - | 3 | 18 |
3 | 25 | - | 1 | 24 |
4 | 38 | - | 3 | 35 |
5 | 13 | - | - | 13 |
6 | 45 | - | 1 | 44 |
7 | 10 | - | - | 10 |
8 | 45 | - | 1 | 44 |
9 | 37 | - | - | 37 |
250 | 9 | 241 |