On the Genesis of Species
Form and Function A Contribution to the History of Animal Morphology
Facts and Arguments for Darwin
Explanation of Terms Used in Entomology
Evolution in Modern Thought
Evolution An Investigation and a Critique
Darwiniana Essays and Reviews Pertaining to Darwinism
Darwin and modern science
Contributions to the Theory of Natural Selection
Concerning Animals And Other Matters
At the Deathbed of Darwinism A Series of Papers(BIOLOGY)
American Addresses, With a Lecture on the Study of Biology
The History of Four-Footed Beasts and Serpents