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ventilators put across the windows of larders,
pantries, etc., so as to thereby exclude flies and
dust, but to allow the admission of fresh air. Last
year I received some samples of a very suitable
gauze cotton material cut into squares of different
sizes and weighted with little lead clips at the
corners, making them very adaptable for spreading
over a jug, bottle, butter dish, jam pot, etc.,
and effectually preventing the wandering fly from
obtaining access.
Formalin gas and spray do not seem to be
effective in killing flies.
I am informed that Izal sprayed on flies
answers the purpose; the flies so treated become
stupified and fall; they can then be swept up and
burnt.
Water Supply.—There is now a constant
water supply for the whole of the district furnished
by the Metropolitan Water Board, who
a few years back took over the obligations of the
various Water Companies that at that time supplied
Greater London. The source is Thames
water, and the intake is at Sunbury, whence,
after the necessary filtrations, it is distributed to
this neighbourhood by what used to be the Lambeth
Water Works mains. It is a particularly
good and wholesome water, and is supplied by
this agency to a large part of South London,
including Brixton, Streatham, Penge, Anerley,
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