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7
It will be noted in Table I. that the number of people living
in institutions in this district but belonging to other districts has
been estimated at 1,295. These are technically known as "nonresidents."
This number if deducted from the estimated gross
population gives the estimated nett population, namely, 35,016.
BIRTHS AND BIRTH-RATES.
The total number of births registered in the district during
the year was 1,117. This gives a birth-rate per 1,000 of the
entire population of 30 76 as compared with 33.13 last year.
The birth-rate in the Parish of Heston is 3179 per 1,000 of
its estimated gross population, and in Isleworth 30.26. Last year
the corresponding birth-rates in the two parishes was 32 05 in
Heston, and 33 66 in Isleworth.
CORRECTED BIRTH-RATES.
In this district every year, a certain number of births occurs
in the Union Infirmary which do not belong to the district. For
the year 1910, this number was 67 as compared with 53 in the
pievious year. This number must therefore be deducted from
the total number of births to give the nett births belonging to
the district, namely, 1,050. The corrected birth-rate means the
number of births belonging to the district per 1,000 of the estimated
nett population, and for the entire district is 29.98 as compared
with 32.94 for the year 1909.
For each parish separately, the corrected birth-rates are, for
Heston 31.79 for 1910 as compared with 32.05 for the year 1909,
and for Isleworth 29.06 for 1910 as compared with 33.45 per
1,000 for the year 1909.
It is right to observe that even these corrected birth-rates
are probably too high, simply because the estimated gross
population of the Registrar-General is too low.
ILLEGITIMACY.
The following table gives the number of illegitimate births
which occurred in this district during the year. The term "non-