Complex sentence: From 1906 to 1909, Geddes was an Assistant Professor of Anatomy at Edinburgh University and from 1913 to 1914 he was a Professor of Anatomy at the Royal College of Surgeons in Ireland.
Split into simpler sentences: From 1906 to 1909, Geddes was an Assistant Professor of Anatomy at Edinburgh University. From 1913 to 1914 he was a Professor of Anatomy at the Royal College of Surgeons in Ireland.