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 London County Council]
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DIAGRAM 8.
Showing the number of spores of Bacillus Enteritidis Sporogenes In Crossness
crude sewage, and In the effluent from the 13 ft. coke-bed.