M 23
(c) Drainage.
79. Permanent anti-malarial drainage costing $17,580 and general drainage costing $168,583 was carried out by the Public Works Department.
(d) Water supplies.
80. The enormous increase in the population severely taxed the supply during the year necessitating a reversion to the intermittent system. The daily consumption of water per capita is surprisingly high, being approximately fifteen gallons based on an estimated population of 1,750,000.
81. Regular examination of the water supply showed that a satisfactory standard of purity was maintained.
(e) Domiciliary visiting and inspections.
82. This work was carried out by health officers and sanitary inspectors as in previous years. There was no change in the organization mentioned in last year's report whereby sanitary inspectors worked under the control of the chairman, Urban Council. But, with the arrival at the end of the year of a deputy director of health services, steps to reorganize the system were immediately taken and arrangements are now advanced for the transfer of the inspectorate to the Medical Department where, under the direct control of the health officers, they will be able more effectively to use their training and experience in the promotion of hygiene generally in the Colony.
83. In the urban areas there are 23,728 Chinese-type houses, most of them having three storeys. 229,385 floors were cleansed with kerosene oil emulsion during the year.
(f) Offensive trades.
84. During the year 187 premises were licensed for offensive trades in Kowloon and Hong Kong. The trades were as follows:-
Table IX.
19381939 Bone boiling and storing2020 Chromium plating56 Cleaning and storing of shark's fins2726 Fat boiling and soap making4041 Feather drying, cleaning, sorting1416 Hair drying, sorting65 Lard boiling22 Manganese crushing and battery manufacture3432 Packing of skins and hides11 Pig roasting2321 Rag sorting and packing109 Resin boiling Tanneries22 6COM 23
(c) Drainage.
79. Permanent anti-malarial drainage costing $17,580 and general drainage costing $168,583 was carried out by the Public Works Department.
(d) Water supplies.
80. The enormous increase in the population severely taxed the supply during the year necessitating a reversion to the intermittent system. The daily consumption of water per capita is surprisingly high, being approximately fifteen gallons based on an estimated population of 1,750,000.
81. Regular examination of the water supply showed that a satisfactory standard of purity was maintained.
(e) Domiciliary visiting and inspections.
82. This work was carried out by health officers and sanitary inspectors as in previous years. There was no change in the organization mentioned in last year's report whereby sanitary inspectors worked under the control of the chairman, Urban Council. But, with the arrival at the end of the year of a deputy director of health services, steps to reorganize the system were immediately taken and arrangements are now advanced for the transfer of the inspectorate to the Medical Department where, under the direct control of the health officers, they will be able more effectively to use their training and experience in the promotion of hygiene generally in the Colony.
83. In the urban areas there are 23,728 Chinese-type houses, most of them having three storeys.
229,385 floors were cleansed with kerosene oil emulsion during the year.
(f) Offensive trades.
84. During the year 187 premises were licensed for offensive trades in Kowloon and Hong Kong. The trades were as follows:-
Table IX.
1938.
1939.
Bone boiling and storing
20
20
Chromium plating
5
6
Cleaning and storing of shark's fins
27
26
Fat boiling and soap making
40
41
Feather drying, cleaning, sorting
14
16
Hair drying, sorting
6
5
Lard boiling
2
2
Manganese crushing and battery manufacture
34
32
Packing of skins and hides
1
1
Pig roasting
23
21
Rag sorting and packing
10
.9
Resin boiling
Tanneries
2
2
CO
6
Co
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