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21
with the idea of obtaining better external surroundings for
their children. The above would explain the two periods
of excess. The first period of deficiency is possibly due to
the fact that at the ages 15-25 young members of the family
leave home in order to obtain work elsewhere, the earlier
rise to the second period of excess in the case of females
being possibly due to the younger age at which females
marry or perhaps to an influx of domestic servants. The
second period of deficiency over 45 years is due to the fact
that the district is young and the influx of young people
has been sufficiently marked to prevent the preponderance
of older ones, exactly the converse of the effect of emigration
on a population.
Sex Distribution.—The following Table, No. 9,
shows the proportion of females to every 100 males in each
of the wards of the District.

Conjugal Conditions.—The following Table, No. 10,
shows the numbers of the population, single, married, and
widowed, at various ages, as compiled from Vol. VII of the
Census returns.