CHAPTER VII

MOSQUITOES AND MALARIA 106

Early reference to malaria, 106; its general distribution, 106; theories in regard to its cause, 107; insects early suspected, 107; _The parasite that causes malaria_, 108; studies of the parasite, 108; _Life-history in human host_, 109; its effect on the host, 110; the search for the sexual generation, 111; _The parasite in the mosquito_, 112; review of whole life-history, 115; malaria transmitted only by mosquitoes, 115; _Summary_, 117; experimental proof, 118.