Healthy living . that malaria was generallyfound in the low lands near streams and swamps, andpeople thought there was something mysterious in theair of such places that caused the disease. Now weknow that what made the air unhealthful was simplythe mosquitoes which were flying in it; and thereason why mala-ria occurred nearswamps was be-cause there wasstagnant waterthere in whichmosquitoes couldbreed. Only certainkinds of mosqui-toes can carrymalaria in thisway; and you caneasily tell the dif-ference between the malarial mosquitoes and the ordi-nary kinds. The wings of the malarial mosquitoes


Healthy living . that malaria was generallyfound in the low lands near streams and swamps, andpeople thought there was something mysterious in theair of such places that caused the disease. Now weknow that what made the air unhealthful was simplythe mosquitoes which were flying in it; and thereason why mala-ria occurred nearswamps was be-cause there wasstagnant waterthere in whichmosquitoes couldbreed. Only certainkinds of mosqui-toes can carrymalaria in thisway; and you caneasily tell the dif-ference between the malarial mosquitoes and the ordi-nary kinds. The wings of the malarial mosquitoes arespotted, while the wings of the commoner kinds are position of the malarial mosquitoes, when restingon the wall, is different, too. They hold their bodiesout in a straight line from the wall, while the commonmosquitoes sit in a sort of hump-backed position, asyou can see by looking at Fig. 69. Even the larvae of these two sorts of mosquitoes canquite easily be distinguished. The larvae of the malarial.


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Keywords: ., bookcentury1900, bookdecade1910, bookidhealthy, booksubjecthealth