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 Port of London]
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Methods of Rat Destruction Employed-
| Name of Vessel | Date of arrival. | From infected port. | Whether infected, or suspected. | Fumigation by Sulphur Dioxide. | Fumigation by Hydro-cyanic Acid. | Trapping, poisoning, &c. | No. of rates killed. | Whether a certifi- cate of deratisation was issued. | |
|---|---|---|---|---|---|---|---|---|---|
| 1923. | jsrougnt loiwaiu | - | |||||||
| Gebel Hainan | May 28 | Almeria | - | - | - | - | - | - | |
| Tasso | 28 | Alexandria | - | - | - | Ratcatcher | - | - | |
| 630 | Nebraska | 29 | Buenos Aires | - | - | - | Traps | - | - |
| Songster | 29 | Demerara | - | - | - | - | 48 | - | |
| Sutherland Grange | 29 | Campana | - | - | - | Traps & Poison | - | - | |
| Nankin | 29 | Yokohama | - | - | - | Traps | - | - | |
| Mashobra | 30 | Beira | - | - | - | Traps & Poison | 82 | - | |
| Gaika | 30 | Mauritius | - | - | - | - | 20 | - | |
| Sierra Leone | 30 | Gambia | - | - | - | - | - | - | |
| Fageraas | 30 | Rosario | - | - | - | - | - | - | |
| Torfinn Jarl | 30 | Barcelona | - | - | - | - | - | - | |
| Desirade | 31 | Shanghai | - | - | - | - | - | - | |
| 640 | Ionic Star | 31 | Zarate | - | - | - | - | - | - |
| Cortes | 31 | Cadiz | - | - | - | Traps | - | - | |
| Polyphemus | 31 | Shanghai | - | - | - | Traps | - | - | |
| Demodocus | 31 | Bheefoo | - | - | - | Traps | - | - | |
| Cisneros | 31 | Carthagena | - | - | - | - | 4 | - | |
| Thorpe Grange | June 1 | Punta Arenas | - | - | - | - | - | - | |
| Carolina | 2 | Santos | - | - | - | Traps & Poison | - | - | |
| Meissioner | 2 | Beunos Aires | - | - | - | Traps | 29 | - | |
| Plassy | 2 | Bombay | - | - | - | - | 2 | - | |
| City of Canterbury | 2 | Calcutta | - | - | - | Traps | - | - | |
| 650 | Vard | 2 | San Pedro del Pinata | - | - | - | - | - | - |
| Marken | 2 | Mombasa | - | - | - | Traps | 5 | - | |
| City of Melbourne | 2 | Manilla | - | - | - | - | 31 | - | |
| Umlazi | 3 | Mauritius | - | - | - | - | - | - | |
| Atalaia | 3 | Bahia Blanca | - | - | - | - | - | ||
| Maindy Transport | 3 | Huelva | - | - | - | - | - | - | |
| Heemskerk | 3 | Durban | - | - | - | - | - | - | |
| Stella. | 3 | Valencia | - | - | - | - | - | - | |
| Jason | 3 | Valparaiso | - | - | - | - | - | - | |
| Rolfe Jarl | 3 | Genoa | - | - | - | - | 48 | - | |
| 660 | Mishima Maru | 3 | Yokohama | - | - | - | - | - | - |
| Clan Murray | 4 | Calcutta | - | - | - | Traps | - | - | |
| Mashirah | 4 | Ditto | - | - | - | Traps | 48 | - | |
| Northway | 4 | Santa Fe | - | - | - | - | - | - | |
| Selandia | 4 | Bangkok | - | - | - | - | 8 | - | |
| Trevorlar | 5 | Bahia Blanca | - | - | - | - | - | - | |
| Author | 5 | Calcutta | - | - | - | Traps | - | - | |
| Rochdale | 5 | Karachi | - | - | - | - | 22 | - | |
| Gascon | 5 | Beira | - | - | - | - | - | - | |
| Perim | 6 | Calcutta | - | - | - | Traps | - | - | |
| 67 | Rosetti | 6 | Frey Bentos | - | - | - | Traps & Poison | - | - |
| Markara | 6 | Karachi | - | - | - | Traps & Poison | - | - | |
| Carried forward | 4,919 | ||||||||