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102
than the corresponding rate in the rest of England and Wales (0.8 per 1,000 living).
The existence of greater facility for bacteriological examinations in the former
area is doubtless in part responsible for the higher attack-rate there. Of the total
cases notified in 1924, numbering 10,684 (53 weeks), 4,620, or 43 per cent.,were among
children aged 5-15 years, while the deaths at these ages were 178 or 3.9 per cent. The
corresponding percentages for 1923 were 46 per cent, and 4.7 per cent., respectively.
The scarlet fever attack-rate in London during 1924 was 2.5 per thousand of
population, as compared with 2.2 in 1923. In the rest of England and Wales the
corresponding figures were 1.9 and 2.2 respectively. Of the total of 11,610 cases
of scarlet fever notified in 1924 (53 weeks), 6,133 (53 per cent.) were of ages 5-15,
the deaths at these ages numbering 28 (0.5 per cent.). The corresponding percentages
for 1923 were 56 and 0.6 respectively.
The deaths from whooping-cough and measles in 1924 at ages 5-15 numbered
14 and 61 respectively.

Taking the death.rates for 1861.70 as 100 for each age-period, figures are
obtained which illustrate the changes which have occurred in the age-incidence of
mortality in subsequent periods. The results are shown in the diagram on p. 103.
Similar diagrams appeared in Sir Shirley Murphy's Annual Reports for 1897
and 1905.