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30
The difficulty of deciding when to recommend school
closure with the view of preventing the spread of an epidemic
is increased by the absence of any reliable data as to how many
of the children have already suffered from the infectious disease
in question. This might be met by keeping a record of each
child. A simple method would be to have cards printed with
the required headings, such as: Name, date of entering school,
age on entry, date of Measles, Whooping-cough, Scarlet Fever,
Vaccination; spaces being left for the dates, etc., to be
filled in. When the system was once in working order the
cards would merely have to be altered as occasion arose, and
re-sorted according to classes at the commencement of each
term.
Water-Supply.
The District is supplied from the mains of the Barnet
Water Company. The Company pump from five deep wells
in the chalk,—three at Barnet, one at Potter's Bar, and one at
East Barnet; and, in addition, obtain a certain quantity of
water from the New River Company.
The service is at present intermittent to the greater portion
of Finchley, but the Company are under an obligation
to give a constant supply to the whole of the District within
three years.
The quantity of water supplied has been estimated at
about 20 gallons per head per day. No water-softening process
is in use.
Drainage and Sewage-Disposal.
The dual system has been adopted in the District, and a
considerable portion of the surface water is now received into
separate drains, which discharge into natural water-courses.