Evolution

The Effect of External Influences upon Development

The Origin of Vertebrates

History of biology

Evolution of Life and Form

On the Origin of Species

Darwinism stated by Darwin himself

Essays Upon Heredity and Kindred Biological Problems

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

The genetic and the operative evidence relating to secondary sexual characters

Evolution

Eurypterids of the Devonian Holland Quarry Shale of Ohio

On the Tendency of Species to Form Varieties

The case against evolution

The Coal Measures Amphibia of North America

Degeneration: A Chapter in Darwinism

Species and Varieties, Their Origin by Mutation

Lectures on Evolution

Old-Earth or Evolutionary Creation

Unreal Giants

The Genealogical Adam and Eve