London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
City of London 1950
[Report of the Medical Officer of Health for Port of London]
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PART II
NO. 1. WAREHOUSE - WARFARIN ("RAX" POWDER)
Premises Similar to No. 3 warehouse in construction, but contained
some rat harbourage in the form of a false ceiling over one
section of the second, floor. There was also considerable -wall
damage in this section and a direct run into a workmen's canteen.
The amount of rat attractive foodstuffs was somewhat less
than in No. 3 warehouse.
Infestation Sligh recent runs and excreta on upper floors.
Operation As described in Part I.
"COMPOUND 42" - RAX POVfflER
TABLE I
CHOICE OF BAITS TAKEN - 13 STATIONS
| Period | Sausage Rusk | Cornmeal | Oatmeal |
|---|---|---|---|
| Aug. 28th 1st day | 95 Grams | 75 Grams | 30 Grams |
| 2nd " | 225 " | 165 " | - |
| 3rd " | 700 " | 230 " | 30 " |
TABLE II POISONED RUSK TAKES - 24 STATIONS
| Period | Take | Period | Take |
|---|---|---|---|
| Sept. 3rd 1st day | 635 Grams | 6th day | 625 Grams |
| 2nd " | 850 " | 7th " | 215 " |
| 3rd " | 840 " | 8th " | 80 " |
| 4th " | 740 " | 9th " | - |
| 5th " | 670 " | 10th " | - |
TABLE III RATS RECOVERED
| Period | Male | Female | Location |
|---|---|---|---|
| 4th day | - | 2 | Top Floor |
| 5th " | - | 3 | Top & 2nd |
| 6th " | - | 5 | Top, 2nd & outside |
| 7th " | 1 | 2 | Top & 2nd |
| 8th " | - | - | |
| 9 th " | - | - | |
| 10th " | - | - | |
| 1 | 12 | ||
| "1080" |
TABLE IV
14th Sept. 20 POINTS OF LIQUID ON TOP FLOOR
| Date | Rats Recovered | Location | |
|---|---|---|---|
| M. | F. | ||
| 15th Sept. | 8 | 1 | 1st and 2nd Floor |
| 17th " | 1 | - | Top Floor |
| 18th " | - | - | - |
| 9 | 1 | ||
(18)