An elementary physiology and hygiene for use in upper grammar grades . es, producing frightful epidemics andkilling thousands of people. A few years ago three scientists wentto the warm cli-mates to studythe that itwas carried byFig. 86.—Stbgomtia. mosquitoes they The mosquito that distributes yellow fever, allowed them-selves to be bitten by mosquitoes that they suspected,and one of them took the disease and died of it. Hewas a hero, just as brave as one who fights in battle,and his death has been one of the great benefits tomankind, for it has shown ushow to stop this fright
An elementary physiology and hygiene for use in upper grammar grades . es, producing frightful epidemics andkilling thousands of people. A few years ago three scientists wentto the warm cli-mates to studythe that itwas carried byFig. 86.—Stbgomtia. mosquitoes they The mosquito that distributes yellow fever, allowed them-selves to be bitten by mosquitoes that they suspected,and one of them took the disease and died of it. Hewas a hero, just as brave as one who fights in battle,and his death has been one of the great benefits tomankind, for it has shown ushow to stop this frightfuldisease. To fight the mosquito is tofight yellow fever. It is notthe common mosquito that isto hlame, nor is it the sameone that carries malaria. Tostop yellow fever the breedingplaces of mosquitoes should bedestroyed, or covered, to pre- Flea (greatlyvent mosquitoes from getting magnified), into them to lay their eggs. The patient, too, is to beguarded from mosquitoes, since it is only by biting apatient that the insect obtains the germs and can thus. PREVENTABLE DISEASES 267 carry the disease. For this reason, yellow feverpatients are now kept carefully covered by mosquitonetting, so that the insects cannot bite them. Since this way of fighting yellow fever has beenfollowed, the disease has lost most of its terror. InHavana, and in Panama, where yellow fever was alwaysfound before this discovery, it has now almost dis-appeared. One epidemic in New Orleans, which startedbefore the people understood the danger of mosqui-toes, was quick-ly stopped whenthey began tofight m o s q u i-toes. The mosquito,then, provesitself a deadlyenemy, since it Fig. 88. —The Rat. is the means of This animal is largely responsible for the dis-distribu ting two tribution of the bubonic plague. most serious diseases. Money spent in its extermina-tion is well invested, and every one should be glad toaid in the work of destroying it. Bubonic Plague. — The plague is another disease th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1
