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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 1949
[Report of the Medical Officer of Health for London County Council]
- Published
- 1950
- Pages
- 164
- Tables
- 136
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Page 2
The following comparison of the number of deaths in London from the principal infectious diseases is of interest:—
Disease Number of deaths 1900 1949 -
Page 4
The total births allocated to London for 1949 were:—
-
Page 6
Percentages in recent years are:—
London England and Wales -
Page 7
The chief movements resulting from these alterations are estimated to be:—
Cause Approximate change as a percentage of those formerly assigned to this cause* -
Page 10
If, as an indication of mortality from degenerative disease, we combine heart disease, other circulatory diseases, cerebral vascular lesions, nephritis and (for reasons indicated above) bronchitis, the following trend becomes apparent:—
Year Mortality (per 1,000) from cardiovascular-renal disease and bronchitis -
Page 11
London : Changes in Mortality Rates from Cancer between 1931-33 and 1947-49 (All Ages)
Site Males Females Mean death- rate 1947-49 per 1,000 Change between 1931-33 and 1947-49 Mean death- rate 1947-49 per 1,000 Change between 1931-33 and 1947-49 -
Page 12
The leading causes of death in London in 1949, were as follow:—
Deaths Per 1,000 population -
Page 14
The distribution of causes of death in the first four weeks of life in 1949 was as follows:—
Cause No. of deaths % Total -
Page 14
London:
Year Live and still births Deaths Notifications Maternal sepsis Other childbirth Puerperal pyrexia No. Rate No. Rate No. Rate -
Page 15
The analysis of maternal deaths into (i) post-abortion; (ii) other; is as follows:—
Cause of death Post abortion Other Total -
Page 16
In London, the death-rates from dysentery since the beginning of the century have been as follow:—
Mean annual death-rate per 1,000 -
Page 19
An important feature is the reduction in the case mortality in measles. The figures are:—
Years Estimated cases* Deaths Crude case mortality per cent. -
Page 19
Ophthalmia Neonatorum
Number of cases Domiciliary Confinements Institutional Confinements Total -
Page 19
The condition at the end of the year of the 186 cases notified was:—
-
Page 21
Deaths from Heart Disease under 45 Years
Year 0—4 5—14 15—44 Total -
Page 23
Civilian death-rates per 1,000 living in 1949 in London and for the whole country were:—
Pulmonary Non-pulmonary -
Page 26
Tuberculous milk The following are details of the sampling for bacteriological examination of milk coming into London in churns by road and rail and the results of the examinations:-
Source of sample Designation. Samples Percentage positive of completed samples Total Positive Incomplete Negative 1949 1948 -
Page 27
Examinations by the Council's Ophthalmologists
Classification Certified blind Not blind Grand total Male Female Total Male Female Total -
Page 27
The causes of blindness in the 27 children under five years of age who were certified during the year were:—
-
Page 27
Blind persons examined as to suitability for training and the results were :—
Male Female Total -
Page 27
Registration of Nursing Homes At the end of the year 58 nursing homes on the register were functioning compared with 62 registered homes open at the end of 1948. Four new registrations of homes took place and 8 homes were closed during the year. In the 58 homes there were 1,023 beds distributed as follows:
Number of beds in home Number of homes Type of patient accommodated Total Maternity only Maternity and others Others -
Page 44
The following table shows the number of attendances at the various types of sessions (excluding dental) which were held in the centres during 1948 (approximate figures only available) and 1949:—
Type of session Attendances 1948 (approx. figures) 1949 First Total First Total -
Page 49
The corresponding figures for the previous year are also shown.
On 31s/ December, On 1949 31s/ December, 1948 -
Page 50
The position as regards residential nursery accommodation on 30th June was as follows:—
Total accommodation Number of children in residence -
Page 52
The following is a statement of persons admitted to recuperative holiday homes in 1949. The comparable figures for the period 5th July, 1948, to 31st December, 1948 (six months), are given in brackets:—
Unaccompanied Children Expectant and Nursing Mothers and Accompanied Young Children Other Adults Under Five Years Schoolchildren Mothers Children -
Page 52
DOMICILIARY MIDWIFERY SERVICE The continued fall in the birth rate was reflected in the number of confinements taken by the Council's midwives, as shown in the following table:—
Year Maternity nursing cases Midwifery cases Total -
Page 52
There was also a decrease during the year in the number of confinements under- taken by the district nursing association and hospital district midwives.
Year Maternity nursing eases Midwifery cases Total Grand Total 1948 -
Page 52
The number of midwives employed on 31st December, 1949, was:—
Supervisors Midwives -
Page 53
These figures compare very favourably with the totals for 1948 which were as follow:—
-
Page 54
Midwives Acts, 1902 to 1936 The number of notifications of intention to practise, compared with the previous year, was:-
1948 1949 -
Page 54
The number of cases in which medical aid was summoned by midwives during the year under Section 14(1) of the Midwives Act, 1918, was as follow:—
-
Page 54
Fees paid under the Midwives Acts to medical practitioners called-in by midwives in emergency were as follow:—
1948 1949 -
Page 56
The principal details of work done by the District Nursing Associations on behalf of the Council during the year were:—
Health Division Population Treatments No. of completed treatments per 1,000 population Total visits Total visits per 1,000 population Commenced, Completed -
Page 57
were over 60 years of age, and that females formed 67 per cent, of the total patients treated. The main conditions treated, ignoring age and sex distinctions, were:—
Per cent, of T otal -
Page 58
The following table shows the progressive growth of the service:—
1946 1947 1948 (a) 1949 -
Page 59
In spite of this increase the demand on the service tended to outstrip the supply as is indicated by the following figures for the year:—
Type of case Maternity Other -
Page 60
As to the extent of immunisation, it will be seen that, according to these records, the proportions are:—
Age Population Number immunised Per cent. -
Page 62
Number of persons vaccinated (or re-vaccinated) during the year
Age at 31st Dec., 1949 Under 1 1 to 4 5 to 14 15 or over Total i.e. born in years: 1949 1945 to 1948 1935 to 1944 Before 1935 -
Page 67
Accident Section
Year No. of calls -
Page 67
General Section
Year No. of patients carried Miles run -
Page 73
Accident Section
No. of calls No. of cases Mileage -
Page 73
The nature of the cases dealt with and comparative figures for 1948 were:—
1948 1949 Increase or decrease -
Page 74
General Section Persons conveyed
Patients Others Total Mileage -
Page 74
Comparative statistics for the period 5th July, 1948 (the "appointed day" under the National Health Service Act, 1946), to 31st December, 1948, and the year ended 31st December, 1949, are:—
5th July to 31st Dec., 1948 Year 1949 Patients carried Mileage Patients carried Mileage -
Page 75
Patients requiring rehabilitation following treatment for tuberculosis were placed by the Council at certain village settlements. At the end of 1949 the number of persons accommodated at each of these settlements for whose maintenance the Council had accepted financial responsibility was:—
-
Page 76
Particulars of the number of persons examined are as follows:—
Boroughs Number of miniature films taken Number of persons referred to chest clinics -
Page 76
The following are particulars of sessions, attendances, etc., for the year:—
*Clinic Sessions New Cases Attendances Staff (in terms of whole-time units) -
Page 78
There appears to have been some improvement in the defaulter rate though it is still serious, and the table below gives the number of patients completing treatment and of defaulters as shown by analysis of the returns from the clinics for the year 1949:
Syphilis Gonorrhoea Male Female Male Female -
Page 79
The following table shows the number of cases dealt with by the mental welfare officers during the year together with the action taken:—
Male Female Total -
Page 80
Mental Deficiency Acts, 1913—1938 The following table shows the sources from which cases have been brought to notice under the Mental Deficiency Acts and the action taken thereon:—
Source of information 1948 1949 Totals from 1st April, 1914, to 31st Dec., 1949 -
Page 80
Position as at 31st December, 1949, with regard to the cases referred to in the last column of the preceding table:—
-
Page 81
Summary of cases dealt with during 1949
-
Page 82
The following table gives particulars of the centres established by 31st December, 1949, with numbers on roll and average attendances in December:—
(1) Date of opening (2) Address (3) Borough (4) No. on roll (5) Average daily attendance -
Page 83
Centres for elder boys
-
Page 84
Medical Inspections The following table gives a summary of the medical inspections made during the year and comparisons with previous years:— Routine (detailed) Inspections
1938 1947 1948 1949 No. % No. % No. % No. % -
Page 85
The numbers and percentages of children seen at routine inspections who were referred for treatment (other than for infestation or teeth) in 1949 are shown in the following table and for comparison the percentages for 1948 are also given:— Pupils referred for treatment
Age group and sex Number of pupils examined Number of pupils referred for treatment No. Percentage 1949 1948 -
Page 85
The following table shows the percentages of the principal defects in children of all age groups inspected at routine inspections and referred for treatment or observation, with comparable figures for 1938, 1947 and 1948:— Defects found on medical inspection to require treatment or observation
1938 1947 1948 1949 -
Page 86
Classification of General Condition
A—Good B—Fair C—Poor -
Page 86
The percentage of children referred for treatment or observation on account of nutrition was, in percentages:—
1938 1947 1948 1949 -
Page 86
The percentage of pupils found to have vermin in the hair at routine inspections during 1949, with corresponding figures for 1938, 1947 and 1948, is shown below:— Percentage with verminous heads
1938 1947 1948 1949 -
Page 88
Visual acuity—Percentage with standard, vision (6/6) (With glasses, if worn)
1938 % 1947 % 1948 % 1949 % -
Page 88
A further table shows the percentage of cases of vision defect referred for treatment
1938 % 1947 % 1948 % Already wearing spectacles Not wearing spectacles Total -
Page 89
The percentages of follow-up results showed that treatment was obtained or commenced as follows:—
1938 1947 1948 1949 -
Page 90
Statistics of the clinics held in hospitals in association with the Council's treatment scheme and in the school treatment centres were:—
Type of centre Number of new cases 1938 1947 1948 1949 -
Page 90
A more complete picture of the volume of work carried out at the centres and clinics can be obtained by consideration also of the total attendances, which are given below:—
Type of centre Attendances in 1949 -
Page 92
Day Special Schools
Defect No. of schools Roll Boys Girls Total -
Page 92
Residential Special Schools
Defect No. of schools Accommodation Roll Residential Day -
Page 92
In addition to the handicapped children in the Council's own residential special schools there were at the end of the year 777 London County Council children in non-Council residential special schools catering for the following defects:—
-
Page 93
Hospital Schools The Council provided education for handicapped children in the following three hospitals:—
Hospital Roll Boys Girls -
Page 93
The number of visits to schools made during 1949 by school nursing sisters in connection with outbreaks of the principal infectious diseases were:—
Diphtheria Scarlet fever Measles Whooping-cough Chicken-pox Mumps Poliomyelitis Other diseases Total -
Page 94
Psychiatric service in remand homes Dr. P. D. Scott, M.A., M.D., D.P.M., reports as follows:— Work done (compared with previous year)
1948 1949 -
Page 101
Treatment organisers also attend the special sessions to which pupils are referred by the school health service at the following hospitals:—
-
Page 101
As an example, the following is a summary of the report of the divisional treatment organiser, three of whose assistants act as the link between Guy's Hospital Children's Out-Patient Department, the special clinics, the School Health Service doctors and the voluntary school care committees:—
Children's Dept. Ear, nose and throat Eyes Orthopaedic Skin General Orthoptic -
Page 102
School Dental Service STAFF
Full-time Part-time Equivalent to Full-time Total Full-time Establishment Full-time -
Page 103
Continued from previous page...
1946 1947 1948 1949 -
Page 103
Ratio of permanent teeth restored to permanent teeth extracted :—
-
Page 103
The position in 1949 compared with 1947 and 1948 was as follows :—
1947 1948 1949 -
Page 104
Further examinations of the dental condition of five-year-old school childre were undertaken during 1949 by Lady Mellanby on behalf of the Medical Researc Council, and the following table shows the results of her findings during 1929-194J
Year Children Teeth Total number examined per-cent caries-free per-cent caries-free + those almost caries-free Total number of teeth per-cent caries-free -
Page 105
A tabulation of attendance and treatment figures for the year is given below with comparative figures (where available) for 1948.
1948 1949 -
Page 118
STATISTICS Table 1—Population* of the administrative County of London, 1921-19-19
Year Mid-year estimate of population Average age -
Page 119
Table 2— Vital statistics for the metropolitan boroughs and the County of London in the year 1949(b)
Metropolitan boroughs arranged in divisional order Estimated civilian population 1949 Live births Death.Rates Notifications of infectious disease Deaths Infant mortality (per 1,000live births) Measles Diphtheria Whooping cough Diarrhoea & enteritis age 0.2(per1,000live births) Pulmonary tuberculosis Pneumonia Other resp. dis. Cancer Maternal mortality (per 1,000total births Scarlet fever Diphtheria Typhoid fever Erysipelas Cerebrospinal fever Acute pneumonia Measles Whooping cough Tuberculosis Pulmonary Non. Pulmonary -
Page 120
Table 3—County of London—Principal vital statistics, 1891.1949
Period Annual rate per 1,000 living Annual mortality per 1,000 living (b) Annual mortality per 1,000 Live Births Total births (c) Live births Marriages Deaths (all causes) Cerebrospinal fever Diphtheria Enteric fever Scarlet fever Smallpox Whooping. cough Measles Influenza Tuberculosis Pneumonia (all forms) Bronchitis Other resp. diseases Heart disease Cancer Diabetes Infants 0—1 Diarrhoea and enteritis 0—2 Puerperal fever Other child.birth Pulmonary Non.pulmonary -
Page 121
Table 4—Administrative County of London—Civilian deaths in 1949 by cause
Cause Sex 0— 1 — 5— 15— 45— 65+ Total 1949 1948 -
Page 122
Table 4—Administrative County of London—Civilian deaths in 1949 by cause—continued
Cause Sex 0— 1— 5— 15— 45— 65+ Total 1949 1948 -
Page 122
Table 5.—Live births and Stillbirths—Administrative County of London
Year Live births Stillbirths No. Rate per 1,000 total population No. Rate per 1,000 live and stillbirths -
Page 123
Table 6—County of London—Infant mortality, 1949
Cause of death Age at death Total Rates per 1,000 live births Under 1 day 1 to 7 days 1 to 4 wks. 4 wks. to 1 yr. No. Males Females Total Males Females -
Page 123
Table 7—Infant mortality in London by cause 1911-1949 (Rates per 1,000 live births)
Cause of death 1911 to 1914 1915 to 1918 1919 to 1922 1923 to 1926 1927 to 1930 1931 to 1934 1935 to 1938 1939 to 1942 1943 to 1946 1946 1947 1948 1949 -
Page 124
Table 8—Maternal mortality—London and England and Wales 1940.49 (Rates per 1,000 total births)
1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 -
Page 124
Table 9—Maternal mortality in London 1931-49
Metropolitan boroughs arranged in divisional order Childbirth deaths (a) per 1,000 total-births Number of deaths (b) in childbirth 1949 1931-40 1941-49 Puerperal fever Other causes Total Puerperal fever Other causes Total Puerperal fever Other causes Total -
Page 125
Table 10—Death-rates from certain infectious diseases—London and England and Wales—1931.49 Rates are per 1,000 living except for diarrhoea and enteritis where it is expressed per 1,000 live births
Year Measles Whooping-cough Scarlet fever Diphtheria Diarrhoea and enteritis under 2 London E. & W. London E. & W. London E. & W. London E. & W. London E. & W. -
Page 126
Table 12—Primary notifications (a) of and deaths from tuberculosis in the Administrative County of London
Year Pulmonary tuberculosis Non.pulmonary tuberculosis Formal primary notifications Deaths Formal primary notifications Deaths No. Annual rate per 1,000 living No. Annual rate per 1,000 living No. Annual rate per 1,000 living No. Annual rate per 1,000 living -
Page 126
Table 13(a)—Tuberculosis—Primary notifications on London during the year 1949
Form of tuberculosis notified Sex Number of formal primary notifications of new cases of tuberculosis Total all ages 0- 1- 5- 10- 15- 20- 25- 35- 45— 55- 65+ -
Page -
Table 11—County of London—Notifiable infectious diseases—Annual number of notifications and numbers per 1,000 of population—1931-1949
Year Anthrax Cerebrospinal fever Continued fever Diphtheria Dysentery Encephalitis lethargica Enteric fever Erysipelas Malaria Measles Ophthalmia neonatorum Pneumonia Polioencephalitis Poliomyelitis Puerperal pyrexia Scabies Scarlet fever Smallpox Typhus Whooping-cough Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Kate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate Cases Rate -
Page 127
Table 13(b)—New cases of tuberculosis in London found by other means than notification, 1949
Form of tuberculosis Sex New cases of tuberculosis coming to knowledge otherwise than by formal notification 0. 1. 5. 10. 15. 20. 25. 35. 45. 55. 65 + Total -
Page 127
The sources of information as to the unnotified cases shown above were as follows:—
Source of information Number of cases Pulmonary Non-pulmonary -
Page 127
Table 13(c)—Numbers on the registers, for the whole county, 1941-1949
Cases on the register at the end of the year— 1941 1942 1943 1944 1945 1946 1947 1948 1949 -
Page 128
Table 14(a)—New cases(a) of tuberculosis in London (A.C.) by age 1938-39 and 1946-49 Morbidity rates (i) Pulmonary
Age. Group 1938 1939 1946 1947 1948 1949 No. Rate per 1,000 No. Kate per 1,000 No. Rate per 1,000 No. Rate per 1,000 No. Rate Per 1,000 No. Rate per 1,000 -
Page 128
(ii) Non Pulmonary
Age Group 1938 1939 1946 1947 1948 1949 -
Page 129
Table 14(b)—Tuberculosis deaths in London (A.C.) by age 1938.39 and 1946.49 (i) Pulmonary
Age Group 1938 1939 1946 1947 1948 1949 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 -
Page 129
(ii) Non Pulmonary
Age Group 1938 1939 1946 1947 1948 1949 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 No. Rate per 1,000 -
Page 130
Table 15—New cases of non-pulmonary Tuberculosis in London (A.C.) 1938-1939 and 1946-1949. Distribution according to site Rates for 1,000 living are shown in parenthesis against the number of cases
Age group Year Site of tuberculosis lesion Bones and Joints Abdomen Peripheral glands Meninges Other sites (a) Total -
Page 130
Table 16—Cases of infectious illness reported from schools in 1949 and preceding years
Year Chicken-pox Diphtheria German measles Impetigo Measles Mumps Ophthalmia and conjunctivitis Poliomyelitis Ringworm Scabies Scarlet fever Whooping-cough -
Page 131
Table 17—Diphtheria Immunisation—Year ended 31-12-49
Immunisation in relation to Child population Divisions Totals Age at 31-12-49 1 2 3 4 5 6 7 8 9 -
Page 131
Table 18—Prophylaxis with Pertussis Vaccines—Year ended 31-12-49
Division Age at Date of Final Injection Total Under 1 year 1-4 years 5-14 years -
Page 132
Table 19—Treatment of venereal disease at London clinics
Year. New Cases Total venereal cases Total non-venereal cases Syphilis S. Chancre Gonorrhoea M. F. M. F. M. F. M. F. M. F. -
Page 133
Table 20—School leavers contra-indications for employment
Contra.indications Boys Girls Number Per cent. of inspected pupils (11,606) (a) Number Per cent. of inspected pupils (11,389) (a) -
Page 133
Table 21—"Ascertainment" of handicapped children—Vision A. Children not in special schools:—
Boys Girls Total -
Page 134
Table 22—"Ascertainment" of handicapped children—Hearing A. Children not in special schools:—
Boys Girls Total -
Page 134
Table 23—"Ascertainment" of handicapped children—Epilepsy A. Children not in special schools:—
Boys Girts Total -
Page 135
Table 24—"Ascertainment" of handicapped children—Educationally sub-normal A. Children not in special schools:—
Boys Girls Total -
Page 135
B(i). Children in attendance at Special E.S.N. Schools:—
Boys Girls Total -
Page 135
B(ii). Children in attendance at special E.S.N, classes in ordinary schools:—
Boys Girls Total -
Page 136
Table 26—"Ascertainment" of handicapped children—Physical A. Children not in special schools:—
Boys Girls Total -
Page 136
(i) Number of these children recommended for physically handicapped schools
Morbid condition Day school Residential school Grand total Boys Girls Total Boys Girls Total -
Page 136
(ii) Number of these children recommended for ordinary school
Morbid condition Boys Girls Total -
Page 137
B. Children already in attendance at special (P.H.) schools:—
Boys Girls Total -
Page 137
(i) Number of these children found to be no longer in need of special educational treatment
Morbid condition Day P.H. Schools Residential P.H. Schools Boys Girls Total Boys Girls -
Page 137
(ii) Other recommendations
Morbid condition Day P.H. Schools Residential P.H. Schools Grand Total Continue Day Transfer to Res. Continue Res. Transfer to Day B. G. T. B. G. T. B. G. T. B. G. T. -
Page 138
Table 27—"Ascertainment" of handicapped, children—Dual defects The following children were found on examination to suffer from more than one handicap:—
Boys Girls Total -
Page 138
Table 28—"Ascertainment" of handicapped children—Speech
Boys Girls Total -
Page 138
Table 29—"Ascertainment" of handicapped children—Maladjustment
Boys Girls Total -
Page 138
Table 30—"Ascertainment" of handicapped children—Diabetes Number of children found to be diabetic and suitable for residential treatment:
Boys Girls Total -
Page 138
Table 31—"Ascertainment" of handicapped children—Reclassification The following table shows the number of children re-classified (i.e., found upon examination to be in need of different special educational treatment):—
Boys Girls Total -
Page 139
Table 32—Nominations for treatment under the Rheumatism Scheme, 1947-1949
1947 1948 1949 -
Page 140
Table 33—Admissions of London children to Queen Mary's Hospital, Carshalton, in 1949
Sex Articular Rheumatism Chorea Articular Rheumatism and Chorea Number admitted Percentage with Number admitted Percentage with Number admitted Percentage with Carditis Pericarditis only Valvular damage No cardiac involvement Carditis Valvular damage, Mitral No cardiac involvement Carditis Valvular damage, Mitral No cardiac involvement Mitral Mitral and Aortic and pericarditis -
Page 141
Table 34—Condition on discharge in 1949 of London children treated in Queen Mary's Hospital, Carshalton
Sex Fit for ordinary school or any employment Fit for P.H. school or light employment Unfit for school or work Died Total No. Percentage of total No. Percentage of total No. Percentage of total No. Percentage of total -
Page 141
Table 35—Percentage number of children with cardiac involvement admitted to the special rheumatism units, 1935.1949
-
Page 142
Table 36 County of London—Statistics of the administrative work carried out by the Metropolitan Borough Councils during the year 1949
Sanitary authority Cowsheds Slaughterhouses Offensive trades Smoke nuisances Common lodging houses Cleansing of persons and rooms Water supply Milk-shops Ice-cream premises Restaurants and eating houses No. licensed No. of inspections No. licensed No. of inspections No. authorised No. of inspections Observations Intimations Complaints Notices Houses licensed No. of inspections Persons Rooms or premises Tenement houses extra supply No. on register No. of inspections No. on register No. of inspections No. of places| No. of inspections Adults Children After infectious diseases For vermin -
Page 143
Table 37 Statistics of the administrative work carried out by the Metropolitan Borough Councils during 1949
Borough Public Health Act Housing Acts, 1936 No. of houses in borough No. of houses inspected on account of complaints or illness No. of statutory notices served No. of houses repaired No. of houses inspected Section 25 Section 9 and 10 Number of houses demolished Closing Orders Overcrowding No. of dwellings for working classes erected during the year Underground rooms Houses let in lodgings No. of houses represented No. of houses demolished No. of houses repaired No. of families overcrowded No. of families alternative accom. obtained No. occupied but unfit No. closed or modified occupation approved No. in borough No. of inspections No. of prosecutions No. of complaints remedied No. made No. determined By owners By l.a. Section 11 Voluntarily -
Page 144
Table 38—District Nursing Associations—Completed Treatments—Year ended 31st December, 1949
Diseases Total cases Males Sub-total Females Sub-total All females 0-39 40-59 60+ All males 0-39 40-59 60+ No. % No. % No. % No. % No. % No. % No. % No. % No. % -
Page 145
Atmospheric Pollution Table 39 Deposit Gauge Yearly averages and, period averages of monthly deposits expressed in English tons per square mile
Place and period Rainfall, mm. Insoluble matter Total soluble matter Total solids Included in soluble matter pH value Tar Carbonaceous other than tar Ash Sulphates so4 Chorions Cl1 -
Page 146
Table 39 (continued)
Place and period Rainfall, mm. Insoluble matter Total soluble matter Total solids Included in soluble matter pH value Tar Carbonaceous other than tar Ash Sulphates SO4 Chlo-rions Cl1 -
Page 147
Table 40 Sulphur Gases in Air Lead, Peroxide Method Yearly averages expressed as S0} milligrammes per 100 square centimetres per day
Year average Battersea Park (South East) * Clissold Park Peckham Rye Park * Ravenscourt Park * Victoria Park * Average of 5 selected stations in L.C.C. area County Hall Beckton Crossness Godalming N.E. S.W. laboratory roof -
Page 147
Table 41 Sulphur Dioxide in Air, Volumetric Method Yearly Averages SO2 Parts per Million by Volume
Year Beckton County Hall Crossness -
Page 148
Table 42 Sulphur Dioxide in Air, Volumetric Method Yearly averages (frequencies) Percentages of total readings of S02 above 0.2 part and below 0:1 parts per million by volume
Year Beckton County Hall Roof Crossness Percentage Percentage Percentage Above 0.2 p.p.m. Below 0.1 p.p.m. Above 0.2 p.p.m. Below 0.1 p.p.m. Above 0.2 p.p.m. Below 0.1 p.p.m. -
Page 148
Table 43 Smoke Concentration in Air Monthly Averages Black Suspended matter : Milligrammes per cubic metre
1949 Beckton County Hall Crossness