Science Museum, London - urea, magnesium ammonium phosphate and hydroxyapatite British chemists British physicists British crystallographers 1903 births 1971 deaths British women chemists British women physicists Academics of University College London Academics of the University of Leeds Alumni of Bedford College, London Alumni of Royal Holloway, University of London Alumni of University College London British pacifists British Quakers Deaths from cancer in England Converts to Quakerism Dames Commander of the Order of the British Empire Deaths from cancer of unknown primary origin Female Fellows of the Royal Society British Christian pacifists People educated at Ilford County High School People educated at Woodford County High School For Girls People from Newbridge, County Kildare Presidents of the British Science Association 20th-century British chemists 20th-century British physicists 20th-century British women scientists Women's Engineering Society 20th-century Quakers Presidents of the International Union of Crystallography