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The minimum number of Rats destroyed, on a Calculation based on the amount
of poison taken, is 7,960. In 45 per cent. of the manholes the poison was taken
completely, in 35 per cent. of the manholes the poison was partially taken, and in
only 20 per cent. was there "no take" recorded.

The minimum number of Rats destroyed, on a Calculation based on the amount
of poison taken, is 3,113. In 15 per cent. of the manholes the poison was completely
taken, in 30 per cent. of the manholes the poison was partially taken, and in 55 per
cent. of the manholes was there " no take " recorded.

The minimum number of Rats destroyed, on a calculation based on the amount
of poison taken, is 4,64. In 11 per cent. of the manholes the poison was completely
aken, in 55 2/3 per cent. of the manholes the poison was partially taken, and in 33 1/3
per cent. of the manholes was there " no take " recorded.
During the early part of the year the Ministry of Food, in co-operation with this
Department, investigated certain premises in the Borough, including a Factory, for
the purpose of making a film. Considerable time was spent in the preparation of
this work and the results proved very satisfactory.
Water Supplies.
With the exception of a few wells in the Borough, the Metropolitan Water
Board is responsible for all supplies.
Eight bore holes exist in the Borough for industrial purposes, two of which are
out of commission due to shortage of fuel or mechanical defects. In addition, two
boreholes are normally used in connection with one of the Council's public baths, but
one of these is out or order.
During the erection of prefabricated dwellings a large brick constructed well
was discovered on one of the housing sites. It was deemed advisable not to fill
in this well, and it was therefore securely covered,