Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Annual report of the Medical Officer of Health for the year 1899
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MICROBES PER CUBIC CENTIMETRE. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Samples taken. | Dec., 1808. | Jan., 1S99. | Feb. | Mar. | April. | May. | June. | July. | August. | Sept. | Oct. | Nov. |
River Thames, at Hampton | 22,450 | 34,000 | 34,700 | 19,000 | 4,350 | 1,700 | 2,900 | 6,400 | 2,240 | 3,800 | No Return. | No Return. |
Do., after storage | 360 | 1,840 | 5,320 | 4,640 | 840 | 380 | 980 | 660 | 600 | 1,340 | ||
River Lea, at Angel Road | 15,600 | 16,500 | 44,900 | 43,100 | 10,850 | 29,900 | 4,900 | 2,800 | 6,020 | 3,080 | ||
Do., after storage | 2,900 | 12,400 | 4,500 | 1,180 | 2,740 | 1,640 | 1,660 | 2,540 | 1,240 | 1,480 | ||
1,580 | ||||||||||||
New River, General Filter | 52 | 47 | 36 | 53 | 18 | 14 | 23 | 14 | 22 | 8 | ||
East London, Filter 1 | 72 | 408 | 124 | 74 | 62 | 36 | 54 | 46 | 58 | 64 | ||
Do. „ 2 | 92 | Lost | 118 | 164 | 96 | 8 | 38 | 64 | 40 | 330 | ||
48 |