David Christison

David Christison FRCPE LLD (25 January 1830–21 January 1912) was a Scottish physician, botanist, writer and antiquary. He served as a military doctor during the Crimean War, at which time, owing to illness, he abandoned his medical career. From the 1860s onwards Christison travelled extensively in South America and became a travel writer, publishing an account of his journeys within Paraguay, and other books on topics relating to that country. He also turned to archaeology in which, through his interest in botany, he made advances in the science of dendrochronology. He became a pioneer of systematic field study in archaeological research and was one of the first to carry out an extensive investigation of Scotland's ancient hillforts, writing and publishing extensively on the topic in later life. Provided by Wikipedia