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 1940
[Report of the Medical Officer of Health for Port of London]
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l4.
APPENDIX V.
INTERNATIONAL SANITARY CONVENTION.
V
DERATISATION CERTIFICATES:- The number issued during the period covered by this Report was 118
| No. of Rats recovered | No. of mice recovered | ||
|---|---|---|---|
| Number of Vessels fumigated with Sulphur Dioxide | 66 | 2,239 | 392 |
| Number of Vessels fumigated with Hydrogen Cyanide | 51 | 758 | 101 |
| Number of Vessels deratised by Trapping | 1 | 26 | - |
| 118 | 3,023 | 493 |
DERATISATION EXEMPTION CERTIFICATES:- The number issued during
the year was 711