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 Islington Borough]
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Month | Site No. | Rainfall in inches | (Tons per square mile) | Mg. of SO3/day collected by 100 sq cm of Batch A lead Peroxide (Louvered Box) | ||
---|---|---|---|---|---|---|
Insoluble Deposit | Soluble Deposit | Total Solids | ||||
January | 1 | 1.54 | 10.90 | 6.56 | 17.46 | 4.25 |
„ | 2 | 1.65 | 9.90 | 7.79 | 17.49 | 3.79 |
„ | 3 | 1 85 | 7.02 | 6.36 | 13.38 | 2.65 |
February | 1 | 2.05 | 9.64 | 5.30 | 14.94 | 4.40 |
„ | 2 | 2.17 | 12.68 | 8.35 | 21.03 | 3.78 |
„ | 3 | 2.36 | 11.03 | 6.92 | 17.95 | 2.77 |
March | 1 | 1.65 | 14.21 | 12.39 | 26.60 | 4.35 |
„ | 2 | 1.65 | 16.03 | 11.66 | 27.69 | 4.05 |
„ | 3 | 1.58 | 12.65 | 6.66 | 19.31 | 2.07 |
April | 1 | 0.43 | 8.51 | 8.08 | 16.59 | 3.27 |
„ | 2 | (No records available) | 2.33 | |||
„ | 3 | 0.67 | 11.43 | 3.71 | 15.14 | 1.41 |
May | 1 | (No records available) | 1.99 | |||
„ | 2 | 1.97 | 12.82 | 5.10 | 17.92 | *1.95 |
„ | 3 | 1.85 | 10.96 | 3.01 | 13.97 | 1.22 |
June | 1 | 1.54 | 10.76 | 6.96 | 17.72 | 1.77 |
„ | 2 | 1.85 | 14.70 | 6.46 | 21.16 | 1.38 |
„ | 3 | 1.35 | 18.08 | 8.94 | 27.02 | 0.70 |
July | 1 | 3.07 | 7.72 | 4.97 | 12.69 | 1.20 |
„ | 2 | 3.03 | 12.92 | 4.87 | 17.79 | 1.48 |
„ | 3 | 3.11 | 10.27 | 2.91 | 13.18 | 0.52 |
August | 1 | 3.27 | 7.88 | 11.66 | 19.54 | 0.99 |
„ | 2 | 2.76 | 12.19 | 8.94 | 21.13 | 1.04 |
„ | 3 | 2.44 | 7.85 | 7.15 | 15.00 | 0.54 |
September | 1 | 4.73 | 7.52 | 13.71 | 21.23 | 1.25 |
„ | 2 | 5.00 | 11.36 | 9.64 | 21.00 | 2.07 |
„ | 3 | 5.28 | 7.55 | 22.26 | 29.81 | 0.69 |
October | 1 | 5.16 | 11.23 | 7.78 | 19.01 | 4.72 |
„ | 2 | 5.52 | 11.53 | 8.94 | 20.47 | 3.05 |
„ | 3 | 5.67 | 7.52 | 12.88 | 20. 40 | * 1.66 |
November | 1 | 3.86 | 6.89 | 7.15 | 14.04 | 4.35 |
„ | 2 | 4.06 | 12.52 | 10.47 | 22.99 | 4.13 |
„ | 3 | 3.70 | 8.08 | 4.77 | 12.85 | 2.47 |
December | 1 | 2.32 | 9.11 | 9.07 | 18.18 | 4.32 |
„ | 2 | 2.60 | 10.96 | 5.07 | 16.03 | 4.01 |
„ | 3 | 2.80 | 9.47 | 4.57 | 14.54 | 2.51 |
* Period of exposure 3 10 60 1.11.60 (29 days)
These sites are situated at the following places in the Borough:–
1. Town Hall roof
2. York Way Court (Caledonian Road area)
3. Treatment Centre, at Seven Sisters Road