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MAL WAT $*V
(") In the case of the Hong Kong Waterworks, nota- bly the Pokfoolum, it was found that, after heavy rain, the water collected in the reservoirs was so highly charged with finely-divided kaolin, as to be practically unfilterable, and continued to be so for some time.
The water of the inflowing streams, however, cleared rapid-
ly, after the cessation of rain, though the said streams
continued, to afford a large supply of water. The
interception of streams along the conduits, and even
those flowing direct into the reservoir, afforded the
means of keeping up a continuous supply of filterable
water. The flood-water, collected in the reservoirs had
time to deposit the fine suspended matter, the supply
meanwhile being mainly afforded by the clear waters of
the intercepted streams,
(8.)
The conditions which obtain in Hong Kong may
or may not exist, in like degree in Kowloon. Personally,
I believe that they will. At the same time, it is
probable that the full supply which the new works can
afford, will not be required for some time to come.
Consequently the interception of stress, along the
line of main, may not be immediately necessary, and,
therefore, the question of local filtration may be left
in abeyance, until experience shews that it is desirable.
The matter must not, however, be lost sight of.
(9.) I shall be glad to receive copies of the
At present, I only
final drawings of these works.
possess some general drawings.
I have the honour to be,
Gentlemen,
Your obedient Servant,
Osbert. huderik,
18 7:0 iime