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99
From the birth-rates and death-rates in Table IVa., I
have calculated the mean duration of life in the Parish
and in each of the Sub-Districts during the year 1883,
and found them as follows:—
Mean Duration of Life.
Hanover Square Sub-District . 63.77 years.
Mayfair 72.62 „
Belgravia 51.83 „
Whole Parish 55.09 „
The mean duration of life in this Parish during the last
9 years has been as follows:—
In 1875 it was 46.67 years.
„ 1876 „ 47.96 „
„ 1877 „ 49.52 „
„ 1878 „ 48.03 „
„ 1879 „ 48.55 „
„ 1880 „ 58.01 „
„ 1881 „ 50.26 „
„ 1882 „ 52.56 „
„ 1883 „ 55.09 „
So that the mean duration of life in this Parish during
those 9 years has averaged 50.74 years.
The mean duration of life in London during the last 6
years has been, according to my calculations, as follows:—
In 1878 it was 34.24 years.
„ 1879 „ 34.23 „
„ 1880 „ 35.17 „
„ 1881 „ 35.87 „
„ 1882 „ 36.82 „
„ 1883 „ 37.88 „
So that the mean duration of life in this Parish has been
increased by 9 years since 1875, and that in London by
more than 3½ years since 1879.