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
London County Council 1901
[Report of the Medical Officer of Health for London County Council]
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Table XXa.—Bleaching powder, 1 per cent.; time of exposure, 24 hours.
| Nature of microbe. | Nature of material. | Result of culture and experiment after exposure. |
|---|---|---|
| Bacillus typhosus | On wood | — |
| ,, | On cloth | — |
| ,, | On linen | — |
| On paper | — | |
| Bacillus pyocyaneus | On wood | — |
| ,, | On cloth | |
| ,, | On linen | — |
| ,, | On paper | — |
| Vibrio choleræ | On wood | — |
| ,, | On cloth | — |
| On linen | — | |
| ,, | On paper | — |
| Staphylococcus aureus | On wood | — |
| On cloth | — | |
| On linen | ||
| On paper | — | |
| Spores of bacillus anthracis | On wood | |
| On cloth | ||
| ,, | On linen | |
| On paper | — | |
| Tubercular sputum | On wood | — |
| ,, | On cloth | |
| ,, | On linen | — |
| ,, | On paper | — |
From this table it appears that while a 24 hours' exposure to the 1 per cent. solution of the
bleaching powder completely disinfected the typhoid bacillus and the cholera vibrio on all materials, it
was not so uniformly successful with the other microbes.
E. Klein.
A. C. Houston.
M. H. Gordon.