London's Pulse: Medical Officer of Health reports 1848-1972

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London County Council 1900

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

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Table 1.Particulars of the Bacteria Beds.

No.Name of town or district.Nature of installation. P.—Permanent. T.—Temporary.Number of beds.Distinctive number or name of each bed.Average or working area of the beds. Square feet.Measurement of the beds.Depth of the beds. Feet.Material and size of the material of which the beds are composed.Thickness of euch layer of material, arranged in their order in the beds, from the top downwards.Method of under-drainirg the beds.Actual or estimated cost of making the bed'.Actual or estimated cost per acre of making the beds.Cost of treating sevage per million gailor.
At top. Feet.At bottom. Feet.
47YorkT4l80040 x 20...3Clinker, cinder and coke, ¾ inch to 1/4 inch mesh3 layers, the largest material at the bottom.£s.d.£s.d.£s.d.
280040 x 20...3
380040 x 20...3
480040 x 20...3
T21a...90 x 30...2.75Clinker, cinder and coke, 1 ½ inch to 3 inch meshLayers of coarser material at the top
2a...90 x 30...2.75Clinker, cinder and coke,
T1Ladder filter composed4 x 35/12...23/8 inch to 3/8 inch mesh Clinker
of 10 chambers
T1York filter...67.5 in diameter...6.5Clinker, ½ inch to 2½ inch mesh
T1Gravel...19½ x 111/4...3Clean gravel, coarse4½ inches
„3/8 inch mesh4½ inches
„ ½ inch „9 inches
„¾ inch „9 inches
,, ½ inch ,,9 inches