About the Author
Robert Crookall, born in 1890, was educated at Westminster College, London, and Bristol University. He graduated with first-class honours in Chemistry, Botany and Psychology. After taking his Ph.D. he lectured at Aberdeen University. He then joined the staff of the Geological Survey of Great Britain, specialising in coal-forming plants. He helped in the search for new coal-bearing areas, which work culminated in the publication of a monograph on Fossil Plants of the Carboniferous Rocks of Great Britain (1955-70), the standard work on the subject. He was awarded a Doctorate in Science in 1930. Crookall resigned from his geological work in 1952 in order to devote the rest of his life to psychological studies.