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142. The Malaria Bureau of the Medical Department continued to function throughout the year. The work done included:-
(a) General survey of the Colony and New Territories for the purpose of ascertaining what species of mosquitoes exist and the life history of each.
(b) Research regarding insect-borne diseases to determine the insect hosts and the conditions influencing the spread of infection.
(c) Special investigation in malarious districts with a view to the eradication of disease.
(d) Local mosquito surveys for the abatement of mosquito nuisances.
(e) Co-operation with Government Departments, the Military, Naval and Air Forces, Public Companies and private individuals with regard to the investigation and eradication of malaria.
(f) The teaching of mosquitology.
A full account of the activities of the Bureau will be found in Appendix B.
## GENERAL MEASURES OF SANITATION
### DOMESTIC CLEANLINESS
143. Every domestic building or part of a building occupied by the members of more than one family must, unless especially exempted by the Sanitary Board, be cleansed and limewashed throughout by the owner, to the satisfaction of the Board, not less than once in every year, and notice in writing that such cleansing and limewashing has been completed shall be sent by the owner to the Secretary within three days after the date of completion.
144. It is the duty of the occupier of any domestic building to cause such building to be kept in a cleanly and wholesome condition and to see that the drains, traps, gratings, fall pipes, and sanitary fittings and appliances, are free from obstruction and in an efficient state of repair.
145. In Hong Kong there are 14,006 Chinese houses with 47,382 floors; in Kowloon there are 10,297 houses and 31,239 floors. During the year 156,594 floors in Hong Kong and 94,179 floors in Kowloon were cleansed. During the cleansing process all the furniture is moved and the floors and woodwork washed with kerosene oil emulsion.
M 42
142. The Malaria Bureau of the Medical Department con- tinued to function throughout the year. The work done in- cluded:-
(a) General survey of the Colony and New Territories for the purpose of ascertaining what species of mosquitoes exist and the life history of each.
(b) Research regarding insect borne diseases to determine the insect hosts and the conditions influencing the spread of infection.
(c) Special investigation in malarious districts with a view
to the eradication of disease.
(d) Local mosquito surveys for the abatement of mosquito
nuisances.
(e) Co-operation with Government Departments, the Mili- tary, Naval and Air Forces, Public Companies and private individuals with regard to the investigation and eradiction of malaria.
(f) The teaching of mosquitology.
A full account of the activities of the Bureau will be found in Appendix B.
GENERAL MEASURES OF SANITATION.
DOMESTIC CLEANLINESS.
143. Every domestic building or part of a building occupied by the members of more than one family must, unless especially exempted by the Sanitary Board, be cleansed and limewashed throughout by the owner, to the satisfaction of the Board, not less than once in every year, and notice in writing that such cleansing and limewashing has been completed shall be sent by the owner to the Secretary within three days after the date of completion.
144. It is the duty of the occupier of any domestic building to cause such building to be kept in a cleanly and wholesome condition and to see that the drains, traps, gratings, fall pipes, and sanitary fittings and appliances, are free from obstruction and in an efficient state of repair.
145. In Hong Kong there are 14,006 Chinese houses with 47,382 floors; in Kowloon there are 10,297 houses and 31,239 floors. During the year 156,594 floors in Hong Kong and 94,179 floors in Kowloon were cleansed. During the cleansing process all the furniture is moved and the floors and woodwork washed with kerosene oil emulsion.
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