In 1897 Dr. Ronald Ross demonstrated that malaria was transmitted by these insects
He remained in these posts until 1917 when he became (
honorary)... [DOC] [TLE] Mosquito-malaria theory - Wikipedia [PAR] Mosquito-malaria theory (or sometimes mosquito theory) was a scientific theory 
developed in the latter half of the 19th century that solved the question of how 
malaria was transmitted.