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352
A comparison of the causes of Infantile, Mortality in 1920 with
those of the preceding year shows an increase during last year in the
deaths from Wasting and Debility, Congenital Malformation,
Bronchitis and Pneumonia, and Whooping Cough.
The causes contributing to a high rate of mortality have been
discussed in previous reports, and it will suffice to call attention to
the fact that of 98 children who died under the age of one year, 40
deaths were ascribed to prematurity, wasting, and congenital defects,
and 24 to bronchitis and pneumonia, a total of 64 deaths resulting
from these two groups.
SENILE MORTALITY.—Of the 659 deaths, 185 were of
persons over 70 years of age. The proportion of deaths occurring
among those of over 70 years of age to the total deaths is, therefore,
28 0%. There were 63 deaths of persons over 80
years of age, and 7 of persons over 90—the oldest being 98k.
This is a high proportion of deaths over 70 years of age, which
indicates that there is a relatively large number of old persons in
the Borough, who contribute largely to our death-rate.

ZYMOTIC MORTALITY.
Included in the Zymotic death-rate are the deaths from the
seven principal Zymotic Diseases, viz.: Small-pox, Measles,
Scarlet Fever, Diphtheria, Whooping Cough, "Fever" (including
Enteric Fever, Typhus Fever, and Simple Continued Fever), and
Diarrhoea, and Enteritis.