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 1899

[Report of the Medical Officer of Health for London County Council]

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Expt.Description of the samples.Total number of bacteria, in 1 c.c. of the sample.Number of spores of bacteria in 1 c.c. of the sample.Number of bacteria causing liquefaction of the gelatine in 1 c.c. of the sample.Remarks.
1.2.3.4.5.
13Crossness crude sewage, July 6, 1898.This sample was exam ined for B. e nteritidis onl y.Spores of B. enteritidia present in 0.1 c.c.; absent 0.0l and 0.001 c.c. sewage.
14Crossness effluent from 6-foot coke-bed, July 6, 1898.do.Spores of B. enteritidis present in 0.l c.c.; absent in 0.0l and 0.00l c.c. sewage.
15Crossness crude sewage, July 20,1898.12,800,000 (one expt. with 0.0000l c.c. sewage;.400 (one expt. with 0.1 c.c. sewage).1,700,000 (one expt. with 0.0000l c.c. sewage).The liquefaction of the gelatine with 0.0001 c.c. sewage (col. 2) was so rapid that the colonies could not be counted. The cultivation containing 0.0000l c.c. sewage was, however, counted. Spores of B. enteritidis present in 0.l and 0.0l c.c.; absent in O'OOl c.c. sewage. Gas-forming coli, at least 300,000 per c.c. of sewage. B. fluoresces liquefaciens, 100,000 in 1 c.c. sewage."Sewage proteus,"several colonies in 0.0000l c.c. sewage. Spores of B. mesentericus and B. subtilis present in 0.l c.c. sewage.
16Crossness effluent from 4-foot cokebed, July 20, 1898.9,200,000 (one expt. with 0.00001 c.c.effluent).430 (one expt. with 0.1 c.c. effluent).1,000,000 (one expt. with 0.0000l c.c. effluent).The liquefaction of the gelatine with 0.000l c.c. effluent (col. 2) was so rapid that the colonies could not be counted; the cultivation, however, containing 0.0000l c.c. sewage was counted. Spores of B. enteritidis present in 0.l and 0.0l; absent in 0.00l c.c. effluent. Gas-forming coli at least 300,000 per c.c. of effluent. B. fluorescens liquefaciens, 100,000 in 1 c.c. effluent. Spores of B. mesentericus and B. subtilis present in 0.l c.c. effluent.
17Crossness effluent from 6-foot cokebed, July 20, 1898.This sam pie was exam ined for B. e nteritidis onl y.Spores of B. enteritiiis present in 0.l and 0.0l c.c. effluent.
18Crossness effluent from laborat ory vessel (6-foot coke - bed effluent again treated in laboratory), July 20,1898.do.Spores of B. enteritidis present in 0.l and 0.01 c.c. effluent.
19Crossness crude sewage, July 27,1898.7,200,000 (one expt. with 0.00001 c.c. sewage).870 (one expt. with 0.1 c.c. sewage).900,000 (one expt. with 0.00001 c.c. sewage).Spore of B. enteritidis in 0.l and 0.0l c.c. sewage. B. coli, 500,000 in 1 c.c. sewage. Several colonies of "sewage proteus" in 0.00001c.c. sewage. B. fluorescens liquefaciens 100,000 per c.c. sewage. One colony of B. mycoides in plate culture for spores (0.l c.c. sewage, col. 3).
20Crossness effluent from 6-foot cokebed, July 27, 1898.6,600,000 (one expt. with 0.0000l c.c. effluent).480 (one expt. with 0.l c.c. effluent).300,000 (one expt. with 0.0000l c.c. effluent.Spores of B. enteritidis in 0.l and 0.0l c.c. effluent. B. coli, 600,000 in 1 c.c. effluent.
21Crossness effluent from 4-foot cokebed, July 27, 1898.This sample was exam ined for B. e nteritidis onl y.Spores of B. enteritidis present in 0.1 and 0.0l c.c.; absent in 0.00l c.c. effluent.