Scientists and Their Contributions Match each scientist to the appropriate scientific contribution This Swedish botanist was responsible for creating a binomial system for naming organisms: This wartime nurse employed the use of antiseptic techniques during the Crimean War This English physician pioneered the fields of public health microbiology and epidemiology by mapping the occurrence of cholera: This Dutch merchant created the first simple microscope and called microorganisms animalcules: This French scientist disproved the theory of spontaneous generation by conducting an experiment using swan- necked flasks: Florence Nightingale Louis Pasteur John Snow Carl von Linne (Linnaeus Antonie van Leeuwenhoek