¹Donald Frederick Ashby was accidentally drowned in Barmouth estuary on July 31, 1943, and a promising career was cut short at the age of 28. He was born at Parson's Green, London, on October 10, 1914. In 1938 he was geologist on the University of London Arctic Expedition to Jan Mayen Island, and the same year was appointed assistant lecturer in geology in the University of Bristol. He joined this Society in 1938. Obituary notices in Quart. Journ. Geol. Soc. London, 1945, vol. 100 (for 1944), p. lxi, and Proc. Geol. Assoc. London, 1944, vol. 55, p. 38.