Evolution

Evolution: An Investigation and a Critique

The Perpetuation of Living Beings, Hereditary Transmission and Variation

Degeneration: A Chapter in Darwinism

Degeneration: A Chapter in Darwinism

Half Hours With Modern Scientists

Are the Effects of Use and Disuse Inherited

Last Words on Evolution: A Popular Retrospect and Summary

The Baculum in the Chipmunks of Western North America

Life's Dawn on Earth

The Factors of Organic Evolution

The Ancestry of Modern Amphibia: A Review of the Evidence

The Kingdom of Man

The Biological Problem of To-day: Preformation Or Epigenesis

Evolution: Its nature, its evidence, and its relation to religious thought

At the Deathbed of Darwinism: A Series of Papers