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(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 the Appendix.
174. The information so far collected indicates that the principal agents in the spread of malaria are Anopheles minimus and Anopheles jeyporiensis which breed in small pools and collections of spring water subject to the influence of light and usually situated in areas which are hilly or undulating. Water in contact with newly opened earth in these regions is especially dangerous.
175. Jungle bush and undergrowth, in so far as they provide shade to pools and collections of spring water, hinder rather than promote the spread of malaria.
176. The Public Works Department carry out all anti-malaria works on Crown Lands other than oiling. Each year a sum is inserted for the 'training of nullahs' and each year work to the limit of the sum sanctioned is carried out. There can be no doubt that the disappearance of malaria from the populated areas is to a large measure due to the excellent drainage works carried out by this department.
177. The Public Works Department and the Malaria Bureau co-operated to the fullest extent.
Preventive Measures against Plague.
178. In the campaign against plague the routine measures which have been in vogue since the disease was at its height were continued. They were:-
(a) Periodical cleansing of premises.
(b) Abolition of rat refuges such as ceiling, stair linings and panellings.
(c) Destruction of rats.
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(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 eradication of malaria.
f)
The teaching of mosquitology.
A full account of the activities of the Bureau will be found in the Appendix.
174. The information so far collected indicates that the principal agents in the spread of malaria are Anopheles minimus. and Anopheles Jeyporiensis which breed in small pools and col· lections of spring water subject to the influence of light and usually situated in areas which are hilly or undulating. Water in contact with newly opened earth in these regions is especially dangerous.
175. Jungle bush and undergrowth in so far as they provide shade to pools and collections of spring water, hinder rather than promote the spread of malaria.
176. The Public Works Department carry out all anti-malaria works on Crown Lands other than oiling. Each year a sum is inserted for the 'training of nullahs' and each year work to the limit of the sum sanctioned is carried out. There can be no doubt that the disappearance of malaria from the populated areas is to a large measure due to the excellent drainage works carried out by this department.
177. The Public Works Department and the Malaria Bureau co-operated to the fullest extent.
Preventive Measures against Plague.
178. In the campaign against plague the routine measures which have been in vogue since the disease was at its height were continued. They were :-
(a) Periodical cleansing of premises.
(b) Abolition of rat refuges such as ceiling, stair linings
and panellings.
(c) Destruction of rats.
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