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 Islington, Parish of St Mary]
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Analyses of Samples taken from the Mains of the Company.
1878. | Total Solid Matter per Gallon. | Chloride of Sodium. | Nitrogen as Nitrates. | Organic Matter. | Actual or Saline Ammonia. | Organic Ammonia. | Hardness before Toiling. | Hardness after Boiling fifteen minutes. |
---|---|---|---|---|---|---|---|---|
grs. | grs. | grs. | grs. | grs. | grs. | degs. | degs. | |
January | 22.2 | 1.42 | 0.135 | 0.464 | 0.001 | 0.007 | 15.4 | 3.7 |
February | 21.80 | 1.42 | 0.195 | 0.304 | 0.000 | 0.009 | 15.9 | 4.2 |
March | 20.30 | 1.54 | 0.135 | 0.136 | 0.000 | 0.007 | 13.7 | 2.8 |
April | 17.50 | 1.54 | 0.165 | 0.200 | 0.000 | 0.007 | 12.6 | 2.4 |
May | 15.70 | 1.65 | 0.150 | 0.280 | 0.000 | 0.007 | 12.5 | 3.8 |
June | 19.60 | 1.65 | 0.159 | 0.416 | 0.000 | 0.007 | 14.8 | 3.3 |
July | 18.90 | 1.54 | 0.135 | 0.336 | 0.000 | 0.008 | 13.7 | 3.3 |
August | 17.40 | 1.65 | 0.135 | 0.168 | 0.000 | 0.006 | 13.7 | 3.3 |
September | 19.40 | 1.65 | 0.150 | 0.456 | 0.000 | 0.007 | 14.3 | 3.3 |
October | 19.40 | 1.298 | 0.180 | 0.080 | 0.000 | 0.016 | 12.6 | 2.0 |
November | 20.60 | 1.18 | 0.180 | 0.136 | 0.000 | 0.006 | 13.7 | 3.3 |
December | 22.90 | 0.l62 | 0.180 | 0.512 | 0.000 | 0.005 | 15.4 | 4.2 |
Average | 19.64 | 1.383 | 0.155 | 0.290 | 0.000 | 0.007 | 14.0 | 3.3 |
Analyses of Samples taken from the Cab.rank at Islington Green.
1878. | Total Solid Matter per ! Gallon. | Chloride of Sodium. | Nitrogen as Nitrates. | Organic Matter. | Actual or Saline Ammonia. | Organic Ammonia. | Hardness before Boiling. | Hardness after Boiling fifteen Minutes. |
---|---|---|---|---|---|---|---|---|
grs. | grs. | grs. | grs. | grs. | grs. | degs. | degs. | |
January | 21.9 | 1.42 | 0.135 | 0.200 | 0.001 | 0.008 | 15.4 | 2.8 |
February | 21.80 | 1.42 | 0.195 | 0.304 | 0.000 | 0.009 | 13.7 | 3.7 |
March | 20.30 | 1.54 | 0.134 | 0.192 | 0.000 | 0.007 | 13.7 | 2.8 |
April | 17.40 | 1.42 | 0.165 | 0.336 | 0.000 | 0.006 | 12.6 | 2.4 |
May | 17.60 | 1.65 | 0.144 | 0.192 | 0.000 | 0.005 | 12.6 | 3.7 |
June | 19.90 | 1.65 | 0.144 | 0.360 | 0.000 | 0.006 | 14.8 | 3.3 |
July | 18.30 | 1.54 | 0.135 | 0.368 | 0.000 | 0.008 | 13.2 | 3.3 |
August | 17.40 | 1.65 | 0.135 | 0.136 | 0.000 | 0.006 | 13.7 | 3.3 |
September | 19.30 | 1.65 | 0.150 | 0.456 | 0.000 | 0.007 | 14.3 | 3.3 |
October | 19.30 | 1.18 | 0.135 | 0.136 | 0.000 | 0.007 | 12.6 | 2.8 |
November | 20.40 | 1.29 | 0.180 | 0.136 | 0.000 | 0.005 | 13.7 | 2.8 |
December | 19.57 | 1.43 | 0.151 | 2.944 | 0.000 | 0.006 | 13.7 | 3.1 |
Average | 10.43 | 1.48 | 0.150 | 0.480 | 0.000 | 0.006 | 136 | 3.1 |