23
461
low-level
68. Mr. COOPER always held that no amount of flushing would suffice to remove Flushing such deposit as now finds its way to the sewers, and that it would accumulate, sewers. whatever were the gradient of the sewers. I cannot quite agree with this opinion, for unless the deposit only comes from the immediate vicinity of the low-level sewers, a supposition that is hardly tenable, then it must find its way down the higher level sewers, which have superabundant gradients, and in which no appre- ciable deposit is found. Therefore, there must be some velocity which will sweep forward even the deposit complained of.
Therefore, it is desirable to provide means of flushing the low-level sewers, with great vigour, using sea-water for the purpose. The flush tanks must be filled by pumping, for the tides are both insufficient in lunge and too irregular, to fill a flush-tank at high water. The flushing must, moreover, take place at the time of low water or, at least when the water is below mean-sea level. Therefore no automatic arrangement can be used. I hope, before leaving, to submit a project for flushing one set of low-level sewers at least.
69. The following statement shows the number and position of the automatic Flushing flush-tanks that have been constructed, in connection with the street-sewers.
street sewers.
JS,
Stream.
! M. — Main.
Size of Syphon
in inches.
FLUSHING TANKS.
LIST OF FLUSHING TANKS IN HONGKONG.
Gallons.
1
S.
6
Davis Street, Top, near Rope Works,
1 S.
6
Smith Field, Cattle Depôt,..
1
S.
6
Whitty Street, Top,
1
S.
6
1
S.
6
Near St. Paul's College, Wyndham Street,
1
S. 6
430
500
250
1
M. 6
1
M. 4
1
M. 4
1 M. 4
1
M. 4
1
M. 4
} S. 6
Bonham Road, near the bridge, near No. 754,
Kennedy Road, 1,379 and 1390,..
Nethersole Hospital,
Near French Street, opposite to No. 198, Stone Nullah Lane, No. 79,
Rutter Street, near Tung Hing Theatre,
Robinson Road, near Cringleford, No. 719,.. opposite Excelsior, No. 703, near Eureka, No. 707,......
99
350
287
300
337
2,454
600
63
188
188
225
225
I
M. 41
"9
above St. Joseph's College,.
225
1 M. 4
Peak Road, between Nos. 1,146 and 1093,
250
1 M. 4
Junction of Peel Street and Caine Road, Nos. 1,086, 1,405 and 122,
250
1
M. 6
Caine Road and Arbuthnot Road, near Roman Catholic Cathedral, 374
I M. 6
Stanley and Pottinger Streets, No. 34,
225
1 M. 6
Garden Road and Upper Albert Road near No. 580,
250
2
M. 4
M. 6
Macdonell Road, near the Peak Tramway, right and left of bridge, @ 188, 376 Government Wharf, Murray Pier
225
2
M. 4
Government House, @ 186,
372
1 M. 6
S.W. Corner of Naval Yard,
300
2
M. 4
Lung On Street, near the Public Laundries, @ 78,
156
1
M.
1
M. 6
1 M. 4
Tunglawan,
1 M. 4
First Street, opposite to No. 6,
1 M. 4
How Fong Lane, end Ship Street,
2
M.
M.
1 M. 4
1 M. 4
Russel Street, Bowrington Canal, No. 746,..............
Matheson and Bridges Streets Junction,
Yee Wo Street, Causeway Bay,
Jardine Bazaar,
312
250
300
300
78
218
300
Wongneicheoug, near Black Rock and F.L. 52,
Holland Street, Des Voeux Road West,.
300
225
6,775
Forward,
9,229
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