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11
The natural drainage channels of the district are the Silk
Stream on the West side and the River Brent whose tributaries
form a great part of the Eastern boundary, the River
Brent crossing the district in a South-Westerly direction and
discharging, as does also the Silk Stream, into the Welsh
Harp reservoir.
Throughout practically the whole of the district the configuration
of the ground provides satisfactory natural
drainage.
SOCIAL CONDITIONS.—
A considerable portion of the district, especially in Mill
Hill, is still rural in character. It is essentially a residential
district, but there is a considerable number of factories,
especially in the neighbourhood of Edgware Road and there
is a very considerable working class population.
The figures of the 192,1 Census appeared to indicate that
fully half the population belonged to the artisan and labouring
classes.
There is no one predominant occupation in the district.
Many are employed in factories of various kinds; a large
number are employed in connection with the railways, omnibuses
and other forms of transport and communication ; and
those engaged in clerical and professional occupations form a
large element in the population.
There are no industries in the district having a special
bearing on the Public Health.
CLIMATE.
The following particulars have been extracted from the
Register of Rainfall compiled by Mr. J. Burgess, Headmaster
of the Bell Lane School, and kindly furnished to me
by him:—
Total rainfall 25.85 inches.
Greatest rainfall, July 22nd 1.58 „
Wettest month, July 3.70 „
Driest month, June 09 „
Total number of rain days 178.
Total number of dry days 187.