Popular collection of essays, first published in 1921. According to Wikipedia: "William Beebe, born Charles William Beebe (July 29, 1877 - June 4, 1962) was an American naturalist, ornithologist, marine biologist, entomologist, explorer, and author. He is remembered for the numerous expeditions he conducted for the New York Zoological Society, his deep dives in the Bathysphere, and his prolific scientific writing for both academic and popular audiences."