Natural History

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

The Rise and Progress of Palaeontology

Researches on the Visual Organs of the Trilobites

Through the Crater's Rim

Half Hours with the Lower Animals

The Pleistocene of North America and its vertebrated animals

Animals of the Past

Scientific Essays and Lectures

Dinosaurs, with Special Reference to the American Museum Collections

The British Woodlice

The Kingdom of Man

Auroræ: Their Characters and Spectra

Australasian Fossils: A Students' Manual of Palaeontology

Fossils: A Story of the Rocks and Their Record of Prehistoric Life Denver Museum of Natural History, Popular Series No. 3