Mosquito Brigades and how to Organize ThemLongmans, Green, 1901 - 100 páginas |
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Página 2
... pools of rain - water on rocks , on the margin of slow - running streams , and sometimes , but rarely , in vessels of water . These larvæ float flat on the surface of the water like sticks , and move with a peculiar backward skating ...
... pools of rain - water on rocks , on the margin of slow - running streams , and sometimes , but rarely , in vessels of water . These larvæ float flat on the surface of the water like sticks , and move with a peculiar backward skating ...
Página 8
... pools containing green mould or water - weed are much affected by the larvæ ; and so are pools contained on the surface of weather - worn rock . But on the other hand , however favourable for the larvæ a pool may otherwise be 8 MOSQUITO ...
... pools containing green mould or water - weed are much affected by the larvæ ; and so are pools contained on the surface of weather - worn rock . But on the other hand , however favourable for the larvæ a pool may otherwise be 8 MOSQUITO ...
Página 9
... pools , and consequently malaria , are seldom found on hilly ground , and that both abound on level soil and in flat valleys between hills . At the same time it must be understood that these rules are not without exceptions . Thus larvæ ...
... pools , and consequently malaria , are seldom found on hilly ground , and that both abound on level soil and in flat valleys between hills . At the same time it must be understood that these rules are not without exceptions . Thus larvæ ...
Página 10
... pools have been overlooked owing to the copious vegetation , or that the insects are old ones which have lived in the bush since the last rainy season . Fortunately these conditions do not obtain much in large towns , where the fight ...
... pools have been overlooked owing to the copious vegetation , or that the insects are old ones which have lived in the bush since the last rainy season . Fortunately these conditions do not obtain much in large towns , where the fight ...
Página 11
... pools at any one spot we shall certainly largely reduce the Anopheles at that spot , even though a few insects may occasionally wander in from without . In other words , in most towns where they are numerous we may be sure that the vast ...
... pools at any one spot we shall certainly largely reduce the Anopheles at that spot , even though a few insects may occasionally wander in from without . In other words , in most towns where they are numerous we may be sure that the vast ...
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Términos y frases comunes
adult Anopheles gang Anopheles larvæ bites breeding places breeding pools British Medical Journal broken bottles broom campaign against mosquitoes carry cisterns cleared collections of water contain larvæ cost Crown 8vo Culex gang Culex larvæ destroy larvæ disinfection ditches drainage drained dry season elephan elephantiasis employed Europeans expedition experience fact filled film Freetown ground gutters Havana Histology Hospital houses Illustrations insects kerosene kill the larvæ Lagos large numbers Lecturer Liverpool School London lyptus malaria malarial fever marsh matter measures method months mosquito brigade mosquito-borne disease municipality natives number of mosquitoes parasites Physiology pits Plates ponds possible practical present Professor puddles punkahs quinine quitoes rain removed rock RONALD ROSS Ross rubbish rubble sanitary School of Tropical Sierra Leone stagnant water STEPHEN PAGET streets superintendent surface Surgeon tins tions Tropical Medicine tropical towns vessels wire gauze yards yellow fever
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