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
Wandsworth 1913
[Report of the Medical Officer of Health for Wandsworth, Metropolitan Borough]
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Report of the Medical Officer of Health. 291
| Number of samples free from preservative | 138 |
| Number of samples containing 0.05 per cent. or less (in terms of Boric Acid H3BO3) | 21 |
| Number of samples containing 0.10 per cent. or less, but more than 0.05 | 60 |
| Number of samples containing 0.5 per cent. or less, but more than 0.10 | 39 |
| Number of samples containing 0.20 per cent. or less, but more than 0.15 | 61 |
| Number of samples containing 0.25 per cent. or less, but more than 0.20 | 55 |
| Number of samples containing 0.30 per cent. or less, but more than 0.25 | 38 |
| Number of samples containing 0.35 per cent. or less, but more than 0.30 | 33 |
| Number of samples containing 0.40 per cent. or less, but more than 0.35 | 41 |
| Number of samples containing 0.45 per cent. or less, but more than 0.40 | 50 |
| Number of samples containing 0.50 per cent. or less, but more than 0.45 | 34 |
| Over 0.50 per cent | 14 |
| 584 |
The average content of Boron preservative, (in terms of
Crystallised Boric Acid), contained in the 374 samples of Batter,
(reported as genuine), which contained th is preservative amounted
to 0.25 per cent., equivalent to 17.5 grains per lb. Butter.