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104
From Table IV it appears that the birth.rate of the
May fair Sub.district was only 11.83, as against 13.74 in
1888, while that of the Belgravia Sub.district was 22.14,
as against 20 31 in 1888; and that the corrected death.rate
of the May fair Sub.district was only 12.09, as against 13.47
in 1888, and that of the Belgravia Sub.district only 15.27,
as against 17 38 in 1888, the death.rate of both the Sub.
districts being, as shown in Table IVa, the lowest yet
recorded.
From the birth and death rates in Table IVa I have calculated,
as usual, the mean length of life. I use the term
mean length of life instead of mean duration of life in
order to prevent confusion, as the term "mean duration of
life" is a technical expression, which means the mean length
of life as calculated by the life.table method. The mean
length of life stated in this report is calculated by means
of Dr. Bristowe's formula.
Mean Length of Life.
Mayfair Sub.District 83.55
Belgravia . 54.26
Whole Parish 61.43
The calculated mean length of life in this Parish during
the last 15 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 „