on (1884-1956) discovers the electron.ScienceBeatrix Potter (1866-1943), who later achieved prominance as a children's author, discovers that lichen is not a kind of plant, but a symbiotic relationship between algae and fungi; her discovery would not be accepted for another decadeMedicineThe malaria bacillus is discovered by Ronald Ross (1857-1932).MedicineThe bacterium that causes dysentery is di