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].