Evolution

On the Tendency of Species to Form Varieties

The Coal Measures Amphibia of North America

The genetic and the operative evidence relating to secondary sexual characters

The case against evolution

History of biology

The Origin of Vertebrates

Evolution of Life and Form

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

The Evolutionist at Large

A Critique of the Theory of Evolution

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

Creation and Doxology

Degeneration: A Chapter in Darwinism

Lectures on Evolution

Species and Varieties, Their Origin by Mutation

The Other Side of Evolution: Its Effects and Fallacy

The Antiquity of Man

Gene Dialogues

On the Antiquity and the Unity of the Human Race

The Effect of External Influences upon Development