The Shipley Collection of Scientific Papers, Том 1641833 |
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Страница 87
REMEDIES. AND. PREVENTIVES. AGAINST. MOSQUITOES . INTRODUCTION . Since the discovery that mosquitoes are not only nuisances , but are also conveyers of malaria , yellow fever , filariasis , and dengue fever , a great deal of remedial work ...
REMEDIES. AND. PREVENTIVES. AGAINST. MOSQUITOES . INTRODUCTION . Since the discovery that mosquitoes are not only nuisances , but are also conveyers of malaria , yellow fever , filariasis , and dengue fever , a great deal of remedial work ...
Страница 91
... mosquito after another . When covered over in this way the captured mosquito will attempt to fly and be caught in the kerosene . By this method perhaps the majority of the mosquitoes in a given bedroom - certainly all of those resting ...
... mosquito after another . When covered over in this way the captured mosquito will attempt to fly and be caught in the kerosene . By this method perhaps the majority of the mosquitoes in a given bedroom - certainly all of those resting ...
Страница 94
... mosquitoes still con- tinued to annoy the patients . Finally in the darkest part of a disused cellar was found a half - barrel with standing water in it , which was giving out mosquitoes at the rate of hundreds per day . Frequent change ...
... mosquitoes still con- tinued to annoy the patients . Finally in the darkest part of a disused cellar was found a half - barrel with standing water in it , which was giving out mosquitoes at the rate of hundreds per day . Frequent change ...
Чести термини и фразе
abdomen abdominal segment adult antennæ ants aphid Aphis Appearance apple arsenic attacked body breeding brood buds California caterpillars cells cent citrus cocoons colonies color Commissioner cornicles cyanide damage deposited destructive Distribution dorsal early eggs Entomologist erichsonii Essig Family feed femora flies foliage Food Plants fruit fumigation gallons genus green hatch head hibernate History horticultural host inch long infested instabilis ladybird beetle larch Larch Sawfly large numbers larva larvæ lateral leaves legs Linn louse maggots male mealy bug mermithergates mites mosquitoes moth muscles Natural Enemies nest numbers observations Orasema orchards ovipositor P. C. Jr parasites Paris green pest Pheidole plant lice Plate Polyederkrankheit pound pseudogynes pupa pupæ pupal pupate quarantine Raupen sawfly scale insects southern species specimens spiracles spray spring stage summer surface thorax thrips Throughout the entire trees usually ventral winged female winter workers yellow young