Ferrar, Hartley.

p 18: During the first six months, we find him poring over Drygalski, an author to whom he and several others frequently returned. In rapid succession we find him reading Ball’s The Cause of an Ice Age, Morley’s Challenger Notes, Judd’s Volcanoes, Gregory’s Great Rift Valley, Nansen’s First Crossing of Greenland, Scoresby’s Arctic Regions, Greely’s Handbook of Arctic Observation, Mill’s The Realm of Nature, Ross’s Voyage to the Southern Seas, and Howorth’s The Glacial Nightmare.