8vo, XXI, 602pp. Hardcover with no d/w in excellent condition with red cloth boards with a gilt title on a gilt-lined black box on the spine and a blind-stamped title and lining on the front board with minor shelf wear and bumped corners only, text in excellent condition with prior owner’s name neatly written on ffep. This was originally published with the same three authors in 1932 then 1939 and again in 1948 under the title “A textbook of Geology Part 1 – Physical Geology”. Part II is the “History of Geology” by Dunbar. This volume is a learned and scholarly work by three Yale professors and together with Part II is regarded as the gold standard in specialised Geology textbooks.