A Study of the Malarial Mosquitoes of Southern Illinois

I. Operations of 1918 and 1919

Abstract

It has been the main object of the survey to find the kinds of places in which malarial mosquitoes breed in southern Illinois and to learn which kinds are clearly preferred and how continuously and to what extent the various species abound through the year. From these data, together with those obtained from physicians, certain conclusions have been drawn in respect to the relation between the amount of malarial disease on the one hand and the number of malarial mosquitoes, the proximity of their breeding-areas, and the distances to which they are capable of flying, on the other.