Dictionary of philosophy and psychology, including many of the principal conceptions of ethics, logic, aesthetics, philosophy of religion, mental pathology, anthropology, biology, neurology, physiology, economics, political and social philosophy, philology, physical science, and education, and giving a terminology in English, French, German, and Italian,

The lives of a cell : notes of a biology watcher

The fitness of the environment : an inquiry into the biological significance of the properties of matter

Did the Devil make Darwin do it? : modern perspectives on the creation-evolution controversy

Dance of the continents : adventures with rocks and time

American Indian ecology