E
Early marriage, [272].
Earth's age, [155].
Ecstatic flight, [136].
Egg-laying mammals, [208].
Eimer and orthogenesis, [243].
Elements of Geology, Lyell, [26].
Emanuel Kant and evolution, [13].
Embryo of chick, [203].
Emerson and nature, [48].
Empedocles and evolution, [8].
English sparrow (see [Sparrow, English]).
Environment in man, [258].
Eugenic program, [269].
Evening primrose and mutation, [246].
Evolution since Darwin, [233].