Ecology

Through the Crater's Rim

Through Magic Glasses and Other Lectures

Relics of Primeval Life: Beginning of Life in the Dawn of Geological Time

Fossil Butterflies

The Factors of Organic Evolution

Familiar Talks on Science: World-Building and Life; Earth, Air and Water

The Natural History of Chocolate

Citizen Scientist

The Descent of Man

The Coal Measures Amphibia of North America

North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus

North American Plesiosaurs: Elasmosaurus, Cimoliasaurus, and Polycotylus

The Pleistocene of North America and its vertebrated animals

The Rise and Progress of Palaeontology

Nature All Around Us