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 Poplar, Metropolitan Borough]
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CONSTITUENTS | JULY | AUGUST | SEPTEMBER | OCTOBER | NOVEMBER | DECEMBER | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
WATER | 57 mm. rain Grams per 100 sq. metres | 2.25 in. rain Tans per square mile | 39 mm. rain Grams per 100 sq. metres | 1.54 in. rain Tons per square mile | 63 mm. rain Grams per 100 sq. metres | 2. 48 in. rain Tans per square mile | 40 mm. rain Grams per 100 sq, metres | 1. 58 in. rain Tons per square mile | 25 mm. rain Grass per 100 sq, metres | 0.99 in. rain Ibns per square mile | 43. 4 mm. rain Grams per 100 sq. metres | 1.71 in. rain Tons per square mile |
Total Water - | ||||||||||||
Insoluble matter | 516 | 13. 16 | 328 | 8. 36 | 534 | 13.63 | 388 | 9.90 | 457 | 11. 64 | 599 | 15.26 |
Soluble in CS2 | 4 | 0. 10 | 1 | 0.03 | 3 | 0.07 | 3 | 0.07 | 11 | 0. 27 | ||
Ash | 413 | 10. 54 | 249 | 6.34 | 418 | 10.67 | 297 | 7. 58 | 334 | 8.52 | 423 | 10.78 |
Other combustible matter | 99 | 2, 52 | 78 | 1.98 | 113 | 2.89 | 88 | 2. 25 | 112 | 2.85 | ||
Tbtal water - | ||||||||||||
Soluble matter | 284 | 7. 25 | 158 | 4.03 | 378 | 9.63 | 320 | 8.15 | 328 | 8. 36 | 459 | 11.70 |
Ca++ | 34 | 0.87 | 26 | 0.67 | 45 | 1.11 | 39 | 1. 01 | 34 | 0.87 | ||
CI' | 25 | 0. 64 | 20 | 0. 50 | 25 | 0. 64 | 29 | 0.74 | 45 | 1. 14 | ||
so"4 | 86 | 2. 18 | 79 | 2.01 | 82 | 2.08 | 128 | 3. 25 | 104 | 2.65 | 181 | 4. 62 |
TOTAL SOLIDS | 800 | 20. 41 | 486 | 12.39 | 912 | 23. 26 | 708 | 18.05 | 785 | 20.00 | 1,058 | 26.96 |
Wt.of fl9 SOg collected estimated on mg/100 sq. cm. / day (Pb02 cylinder) | 1.66 | 1.39 | 1.76 | 3. 28 | 3.81 | 4. 34 |