Observations on the Relationship between Malaria and Pistia in Two Villages in Murshidabad District

course of his duties as health officer of shidabad district has made extensive observations since 1928 on the epidemiology of malaria in relation to the presence of pistia and finally applied the results to practical tests in several isolated highly endemic localities in the districtFrom the success obtained by systematically removing pistia from the breeding places, he concluded that malaria and pistia were inter' related at least in the district of MurshidabadHe suggested that mosquitoes bred out frop3 larva? which have opportunities to feed on pistil become susceptible to plasmodial infectionAccording to him, excepting Anopheles subpictllS and A. vagus, any and every anophelin? mosquito breeding in association with pistia dangerous to the community. It should, hoW ever, be recalled that it is not known whether larvae really feed on pistia. ,