@cocteautriplets Interesting that the name Margaret Tod (one "d") appears as a leader in radium medicine. Glasgow doctor Margaret Todd (two "d"s) also has a radium connection. She came up with the word "isotope" for Frederick Soddy, when he realised that thorium and uranium decay produced nuclearly-different versions of the same element - radium in 1913. #MargaretTod #MargaretTodd #Radium #Isotopes