Popular Science Monthly, Tom 77

acres adaptive radiation adult Alexander Agassiz American animals appear athletes become birds body cent character coal coral coral reefs course definite Devonian direction disease dreams early eggs ether evidence evolution fact fauna feet fossil Harvard hibernation human hybrid ical Ilongot important increase individual instinct institutions interest investigation islands John Dee Kant knowledge laboratory land language Latin less light living maize mathematical matter means ment mental methods mind museum nature nest Nueva Vizcaya ontogeny oreodonts organs origin paleobotany paleontology Paleozoic physical planetesimal plants Pleistocene Pliocene present president problem produced Professor question race recent reefs scientific seems smokers South South America species stage Straits of Magellan teachers theory tion to-day variations young Zoology