London's Pulse: Medical Officer of Health reports 1848-1972
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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 1935
[Report of the Medical Officer of Health for London County Council]
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68
Examination
of samples.
The total number of samples examined in 1935 amounted to 18,747.
The following table shows their classification :—
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Of 596 paints, colours and varnishes examined, 550 were found to be satisfactory,
and 46 were unsatisfactory.
Observations continue to be made to ascertain the effects of the London
atmosphere on paints of varying compositions, and also to what extent this is
dependent on the medium used.
The following table shows the classification and the results of the an oils:—
* Either unsatisfactory or not suitable for Council's requirements.
Various materials and apparatus for special purposes sent to the laboratory
for examination during the year included :—
(1) Foods.—During the year 651 samples were examined and, except in a very
few instances, these were found to be of satisfactory quality. Amongst the cases
commented on adversely were three samples of ground white pepper, the ash of
which was found to be somewhat higher than the normal, the excess consisting
largely of magnesia. A sample of tinned grape fruit contained a slightly excessive
amount of tin (the unofficial standard is 2 grains per pound). A sample of sausage
skins showed evidence of adhering dust and dirt. Several samples of baking powder
and egg substitute powder, submitted by firms tendering for Council contracts, were