Fossils

Walks and Talks in the Geological Field

The Geology of Groton State Forest

Geology and Inhabitants of the Ancient World

Thoughts on a Pebble, or, A First Lesson in Geology

Essay on the Theory of the Earth

A Monograph of the Trilobites of North America: with Coloured Models of the Species

Rocks and Their Origins

Introduction to the Study of Palæontological Botany

Researches on the Visual Organs of the Trilobites

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

Water Reptiles of the Past and Present

Glossary of Geological and Other Scientific Terms Used in the Principles of Geology

Eurypterids of the Devonian Holland Quarry Shale of Ohio

Heroes of science : Botanists, zoologists, and geologists

Cave Hunting

The Lost Lemuria

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

The zoology of the voyage of H.M.S. Beagle: Fossil mammalia

Submerged forests

Voyager 1 Encounters Saturn