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33
between 1861 and 1871, was, for the whole parish,
4.53; for Dulwich, 8.90; for Camberwell, 3.91; for
Peckham, 4.06, and for St. George's, 5.23: and that
these rates of increase must be assumed to prevail
during the forthcoming years, at all events until
special circumstances arise to throw doubt upon the
correctness of this assumption. And for this reason,
and because the census was taken, not in the middle
of the year, but at the end of its first quarter, and
because, further, where we have a uniformly increasing
population, the population actually existing in
the middle of the year represents the mean population
for the year, and that therefore upon which our
determination of the birth-rate and death-rate for
the year must be based, it becomes necessary to
add (in order to determine the population of the
parish and of its sub-districts in the year 1871),
three months increase of population to that ascertained
to have been in existence in the spring of
the year.
I have calculated this three-months increase, by
first of all ascertaining what the increase of population
would have been at the end of 12 months,
according to the rates above given, and by then
dividing such increase by 4. And I have determined