CTTAPTET^ XI 



INSECT TYPE I'UOBJ.EM.^ : MObC^l ITOE.^ 



Mosquitoes and disease. Tlic tliscovury tluii luahuia and 

 yellow fever are Uaiitsiiiitted. by certain mosquitoes slious liow 



Fi(i. (il. ^[}io2^h(Uft mosquitoes and malaria in a city 



A, Anopheles moscinitoes brcMMlinj? ; dots, lumsrs wIu'it malaria «><><'urs. Tiiere 

 would 1)0 more dots in various parts if then' wv >"v li..iis,-v; 



important a role an insect may play in llic nlVairs of liuinan 

 life. No obstacles have sd seriously IjIocIumI llic proj^n-ess of 

 civilization in the tropics as these two diseases. The Panama 



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