Evolution

Curvology

The Earliest Europeans

Schenk's Theory: The Determination of Sex

Pioneers of Evolution from Thales to Huxley

The genetic and the operative evidence relating to secondary sexual characters

A Cultural History of Heredity

Species and Varieties, Their Origin by Mutation

Biology and Its Makers

New Perspectives on Horned Dinosaurs

Facts and Arguments for Darwin

The True and False Theory of Evolution

The Effect of External Influences upon Development

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

Don't Look, Don't Touch, Don't Eat: The Science Behind Revulsion

Animal of realities

The Modes of Origin of Lowest Organisms

Darwin and Modern Science

The Darwinian Hypothesis

The Charles Darwin Collection

Initiative in Evolution