Evolution: Its Nature, Its Evidences, and Its Relation to Religious Thought

adaptive modification Agassiz already amphibians anoura aortic arches appendages arthropods become birds brain breeding called cause cells cerebellum cerebrum commencing completely condition continued cross-breeding cross-sterility Darwin derived differentiation digitigrade dipnoi direction distinct divergent variation divine earliest embryonic development environment Eocene epoch evidence example fact faunas and floras fertile fishes fittest forces fore function genera geographical geological germ-cells gradually higher animals homology horse human evolution increasing individual inherited intermediate links islands isolation kind Lamarckian Lamarckian factors law of evolution lower mammals marsupials ment migrations mind Miocene mode natural selection necessary offspring olfactive ontogenic ontogenic series optic lobes organic evolution organic forms organic kingdom origin of species perissodactyl phenomena phylogenic physical plants Pliocene produce progress race region reproduction reptiles scientific separated sexual stages structure struggle successive supposed taxonomic series theory of evolution tion toes traced true varieties vertebrate whole wholly