Remarks on the water supply of London. / by Sir William Clay.

  • Clay, William, Sir, 1791-1869.
Date:
1849
Catalogue details

Licence: Public Domain Mark

Credit: Remarks on the water supply of London. / by Sir William Clay. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

    106/120 (page 102)
    Analysis of Samples of Water. No. Marks. Clark’s Test. Solid Con- tents in one gallon. Grs. 1 A 1 15i 20 New River 2 B2 16 21 do. 3 C3 21 do. 4 No. 45 16 21-5 Southwark andVauxhall 5 No. 46 15^ 20-1 Southwark and Vauxhali 6 No. 33 17 22-5 Thames at Medenham 7 do. , , do. 8 do. • • do. 9 No. 51 X 16^ 22 Chelsea 10 52 X 16 21-2 do. 11 53 X 15i 23 do. 12 54 X I5| 21 do. 13 55 X 15| 21-1 do. 14 XX A 17 22-3 East London 15 XX B * 17i 23 do. 16 I 15i 20-5 Grand Junction 17 0 15} 20-1 do. 18 U 15} 21 do. 19 R B 19-5 West Middlesex 20 60 X 8| 11-5 f Grand Junction Canal, 21 61 X 8| 11-8 ] Kensal Green 22 23 62 X 63 X 17 16| 23 ^ 22 S do. at West Drayton. Numbers 20 and 21, marked 60X and 61X, were turbid and required filtration, and 22 and 23 not quite clear. (Signed) William Thos. Brands. 8th March, 1849. The specimens, when sent to Mr. Braude, had only the marks and numbers,—I have added the names. The explanation_of the peculiar character of X60 and X61, is to be found in the fact that they were taken from the Grand Junction Canal after it has received the water from the Ruislip reservoir, which collects drainage (rain water). The specimens X62 andX63 are from the Canal, above the junction of the Ruislip Feeder, and where it is filled with Colne water. W. C.