Charles Darwin did a study.
Darwin spent the summer of 1825 as an apprentice doctor, helping his father treat the poor of Shropshire, before going to the well regarded University of Edinburgh Medical School with his brother Erasmus in October 1825
 His five-year voyage on HMS Beagle from 1831 to 1836 established Darwin as an eminent geologist whose observations and theories supported Charles Lyell's concept of gradual geological change

