Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for London, City of ]
This page requires JavaScript
16
have been—fever, 795; diarrhoea, 530; and smallpox,
110—all of which have been the subjects of
special sanitary investigation.
The meteorology of the year is shown in Table
VII. of the Appendix; and, as usual, the facts
have been deduced from observations at Guildhall
by Mr. Haywood. The mean temperature of the
year has been 50 8 degrees Fahr., which is about
one degree below the average; and the range has
been from 22.1 degrees in January, to 78.5 degrees
in July and August. While, too, the temperature
has been less than usual, the humidity of the air
has been under the average. The mean proportion
of it for the whole year has been rather less than
77 degrees of saturation; the range having been
from only 63 degrees in July, to 93 in November—
in fact, the mean proportion of moisture in the
atmosphere during the whole of the summer
months, was barely 66 degrees of saturation, or
scarcely 4 grains of aqueous vapour in a cubic
foot of air. This was due to the remarkably
small proportion of rain in these months—a proportion
that amounted to only about 3.5 inches
in the course of all the summer months; and so dry
was the atmosphere that the rain gauges upon the
roof of Guildhall showed a larger quantity of rain
than those on the ground—the difference being