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throats made it probable that they had had a slight attack of
this disease.
43. In 12 cases infection was attributed to friends and
neighbours, in 28 cases to school attendance, in 2 to the
Fever Hospital, and in 2 to school excursions.
Schools. Bostal Lane School was specially affected, and
on my request medical examinations were made of children in
certain classes. No improvement following, the school was
closed in the summer term until the holidays.
Exclusion of Contacts. Children living in the same
house as a notified case are now excluded two weeks instead
of one as previously.
44. The Annual Report for 1905 oontained a special
Report on a Statistical Investigation into School Incidence
of Scarlet Fever and Diphtheria during the ten years
1896-1905.
45. Statistics were given in the Annual Report for
1908, as to the date of calling in medical attendance in
Scarlet Fever. Some remarks were made in the same Report
as to the high prevalence and comparatively low deathrates
of Scarlet Fever and Diphtheria in Woolwich.
In the last Annual Reporjt I described an investigation into
the incubation period of Scarlet Fever. The result was to
show:—(1) That the period of incubation varies from one
day to six months; (2) That it is barely the majority
of the total cases in which incubation is under seven days;
(3) That in a considerable proportion of cases it is over
four weeks; and (4) That the days from the second to