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10
deaths.
Last year's crude rate was 0.38 per 1,000 less than the corresponding mean (14.93) for the ten
years 1901-10 (after re-calculation of the rates for those years to agree with the results of the
last census), 0.78 less than that (15.33) for the five years 1901-5, and 0'03 above that (1452)
for the years 1906-10. Table I., Appendix A, shows the crude rates recorded during 1901-10.
The 2,074 deaths included 407 of non-residents, most of whom died in the various local
institutions in the Borough (see Table VI., Appendix A). The deaths of residents beyond the
Borough, regularly reported to the Department as in previous years, numbered 218. The nett
total of deaths of residents of the Borough, according to the Department's records, was 1,885
persons, comprising 927 males and 958 females, equal to a nett rate of 13.22 per 1,000 persons,
lhat rate was 0.43 less than the nett decennial mean (13.65), 0.84 less than the same rate for
the first five years (14.06), and 0.03 less than that for the second five (13.25). (For the nett rates
during 1901-10, see Table I., Appendix A.) Comparing the nett rates for the four quarters of
the past three years—
Nett Mortality Rates.
Quarters. 1. 2. 3. 4.
1911 15.49 12.48 12.57 12.34
1910 18.56 13.72 9.41 13.51
1909 14.2 11.04 9.19 14.49
it will be seen that in the third quarter only was there any considerable increase in the
mortality, but the (approximate) equality of the rates for the three quarters (second-fourth) does
suggest. what will hereafter be demonstrated, that the hot summer did not produce that heavy
mortality among infants (from summer diarrhoea) which, judging by past experience, was to be
expected.

Owing to the want of the necessary data the usual tables of sex-age group mortalities cannot
be submitted. As substitutes, Tables 8 and 9 have been prepared, the former showing the
changes in the numbers of deaths among males and females recorded in the Borough and its
Wards during the past three years, and the latter, the numbers of deaths at the six ages (groups
of ages) in the whole Borough during the same period. Table II., Appendix A., shows the
variations in the total numbers of deaths (persons) in the Wards during the six years 1906-11,
at all ages and at ages under one year.