(1821–97), polymath. In 1859, while already professor of geology at Trinity College, Dublin, he enrolled as a medical student, becoming registrar of the college's medical school immediately on qualifying. He published papers on mathematics, geology, and medicine, was secretary of the Royal Zoological Society of Ireland, and in 1866 published a formula for calculating the drop needed to cause instantaneous death at hangings.
From The Oxford Companion to Irish History in Oxford Reference.
Subjects: European History.