Neotropical Hylid Frogs, Genus Smilisca
Natural History of the Ornate Box Turtle, Terrapene Ornata Ornata Agassiz
Middle American Frogs of the Hyla Microcephala Group
Descriptions of New Hylid Frogs From Mexico and Central America
Description of a New Softshell Turtle From the Southeastern United States
Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala
A Taxonomic Study of the Middle American Snake, Pituophis Deppei
A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope
A Review of the Frogs of the Hyla Bistincta Group
A New Subspecies of Slider Turtle (Pseudemys Scripta) From Coahuila, México
The systematic status of the populations of lizards assignable to Cnemidophorus sacki in western México (Sonora southward to Jalisco) has been reviewed in detail by Zweifel (1959, Bull. Amer.
A New Extinct Emydid Turtle From the Lower Pliocene of Oklahoma
A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico
Quadrupeds, what They are and where Found: A Book of Zoology for Boys
Our Common Insects: A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses
Wild Flowers Worth Knowing
The Effects of Cross & Self-Fertilisation in the Vegetable Kingdom
The Different Forms of Flowers on Plants of the Same Species
Getting Acquainted with the Trees
Elements of Structural and Systematic Botany
A Handbook of Some South Indian Grasses
The Story of the Living Machine: A review of the conclusions of Modern Biology
The Scientific Evidences of Organic Evolution
The Origin of Species From the Westminster Review; April 1860
The Life-Story of Insects
The Doctrine of Evolution: Its Basis and Its Scope(BIOLOGY)
The Dancing Mouse A Study in Animal Behavior
Text Book of Biology, Part 1: Vertebrata
On the Reception of the 'Origin of Species'
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
Anecdotes of the Habits and Instinct of Animals
Wild Beasts and Their Ways, Reminiscences of Europe, Asia, Africa and America
The Watchers of the Trails: A Book of Animal Life