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
Poplar 1915
[Report of the Medical Officer of Health for Poplar, Metropolitan Borough]
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Cost of Material and Electricity.
The cost of material in manufacturing 36,985 gallons of the electrolytic fluid was as follows:—
| £ | s. | d. | |
|---|---|---|---|
| Electricity, 7,776 units at 1½d. per unit | 48 | 12 | 0 |
| *Chloride of Magnesium, 3 tons 15 cwts. 2 lbs. | 19 | 13 | 9 |
| *Salt, 55 tons 8 cwts. | 9 | 3 | 7 |
| *Caustic Soda | 5 | 8 | 0 |
| Water | 1 | 13 | 11 |
| Total cost of materials to produce 36,985 gallons | £84 | 11 | 3 |
| Electric motor for stirring: 210 units | 1 | 6 | 3 |
Bottles, Corks and Labels
| Bottles | 16 | 19 | 0 |
|---|---|---|---|
| Corks | 9 | 0 | 0 |
| Labels (no labels ordered) | — | ||
| £25 | 19 | 0 |
Total Quantity Manufactured since Installation of Plant.
Since the installation of the plant, a period of ten years, 418,779
gallons of fluid have been manufactured at a cost for electricity of
£450 l1s. 1d., and materials of £381 9s. 2d. (under ½d. per gallon).*)†