§ Mr. Ellis Smithasked the Parliamentary Secretary to the Ministry of Works if he will state the average insoluble deposit, soluble deposit, total solids, sulphur dioxide and concentration of smoke up to the latest date in 1952, for Stoke-onTrent, Salford, Manchester, Armley Park, Leeds, Philips Park, Manchester, Hooks Green, Drinkwater Park, Salford, Trafford Park, Salford, Portwood, Stockport, Health Centre, Leeds, and Buile Hill Park, Salford, respectively; and the average throughout the country in tabular form.
§ Mr. MolsonThe figures for 1950–52 are not yet available in summary form. The following tables give the latest available figures, for the five year period 194449, for those places mentioned at which observations are made. Corresponding figures for the five-year period 1939 to 1944 and for earlier years are given in 117W the 26th Report of the Atmospheric Pollution Research Committee published
MEASUREMENTS OF DEPOSITED MATTER AVERAGES FOR THE FIVE YEARS 1ST APRIL, 1944, TO 31ST MARCH, 1949 EXPRESSED AS TONS PER SQUARE MILE PER MONTH Station Insoluble Deposit Soluble Deposit Total Solids STOKE-ON-TRENT: Leek Road … 10.0 6.7 16.7 Longton … 10.8 7.5 18.3 2 years' average, 1944–46. Tunstal … 9.0 6.7 15.7 3 years' average, 1944–46, 1948–49. SALFORD: Broughton Senior School … 13.0 7.2 20.2 Drinkwater Park … 9.6 8.0 17.6 Ladywell Sanatorium … 15.0 7.9 22.9 MANCHESTER: Baguley … 4.2 6.2 10.4 Booth Hall … 7.8 6.6 14.4 Heaton Park … 9.5 6.9 16.4 Monsall … 12.8 8.8 21.6 Philips Park … 30.9 10.8 41.7 Rusholme … 11.4 7.9 19.3 Withington … 7.3 6.4 13.7 LEEDS: Armley Park … 20.1 8.7 28.8 2 years' average, 1947–49.
SULPHUR DIOXIDE BY THE VOLUMETRIC METHOD Averages for the five years 1st April, 1944, to 31st March, 1949. Results expressed in volumes of sulphur dioxide per 100 million volumes of air. Station Mean SALFORD: Regent Road … 11 MANCHESTER: Rusholme … 18 1 year only, 1948-49. 118W
SULPHUR MEASUREMENTS BY THE LEAD PEROXIDE METHOD Averages for the five years 1st April, 1944, to 31st March, 1949. Results expressed as milligrams of sulphur trioxide per day per 100 square centimetres of exposed surface. Station Mean STOKE-ON-TRENT: Leek Road 1.81 SALFORD: Ladywell Sanatorium 2.28 Regent Road 2.41 MANCHESTER: Monsall 3.41 Rusholme 2.14 Withington 1.47 LEEDS: Armley Park 2.47 2 years' average, 1947–49. H.M. Stationery Office. No average figure for the whole country can be given.
MEASUREMENTS OF SUSPENDED IMPURITY (SMOKE) Averages for the five years 1st April, 1944, to 31st March, 1949. Results expressed in milligrams per 100 cubic metres of air. Station Mean STOKE-ON-TRENT: Leek Road … 42 SALFORD Regent Road … 58 1 year only, 1948–49. MANCHESTER Rusholme … 25 1 year only, 1948–49.