Evolution

Neanderthals and Atlantis

The Mechanism of Life

The Last Link: Our Present Knowledge of the Descent of Man

The Evolutionist at Large

Degeneration: A Chapter in Darwinism

Degeneration: A Chapter in Darwinism

The Temple of Nature; or, the Origin of Society

Are the Effects of Use and Disuse Inherited

The Biological Problem of To-day: Preformation Or Epigenesis

Lectures on Evolution

Eurypterids of the Devonian Holland Quarry Shale of Ohio

The Factors of Organic Evolution

The Perpetuation of Living Beings, Hereditary Transmission and Variation