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
Deptford 1927
Annual report on the health of the Metropolitan Borough of Deptford
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One of these consists of an outer framework of wire carrying muslin
which is kept wet by means of the draining away of water contained
in a tray; and by means of the evaporation of the water from the
muslin the interior of the safe is kept cool during hot weather. Slate
safes are cool.
Refrigerators, worked by heat and by electricity, as well as water
cooled and slate safes may be seen in the Museum of Hygiene,
28 Portland Place, W.