Nature & Animals

On the Origin of Species by Means of Natural Selection: or the Preservation of Favoured Races in the Struggle for Life. (2nd edition)

Charles Darwin

Walden

Henry David Thoreau

The Book of the National Parks

Robert Sterling Yard

The Variation of Animals and Plants Under Domestication, Vol. I.

Charles Darwin

Contributions to the Theory of Natural Selection: A Series of Essays

Alfred Russel Wallace

Evolution, Old & New: Or, the Theories of Buffon, Dr. Erasmus Darwin and Lamarck,; as compared with that of Charles Darwin

Samuel Butler

More Letters of Charles Darwin — Volume 1: A Record of His Work in a Series of Hitherto Unpublished Letters

Charles Darwin

Anecdotes of the Habits and Instinct of Animals

Lee, R., Mrs.

Adventures of a Young Naturalist

Lucien Biart

Darwin, and After Darwin, Volumes 1 and 3: An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions

George John Romanes

Vegetable Teratology: An Account of the Principal Deviations from the Usual Construction of Plants

Maxwell T. (Maxwell Tylden) Masters

More Science from an Easy Chair

Lankester, E. Ray (Edwin Ray), Sir

Devon, Its Moorlands, Streams and Coasts

Rosalind Northcote

Zoonomia; Or, the Laws of Organic Life, Vol. II

Erasmus Darwin

The Natural History of Pliny, Volume 3 (of 6)

the Elder Pliny

"Wee Tim'rous Beasties": Studies of Animal life and Character

Douglas English

The Natural History of Pliny, Volume 2 (of 6)

the Elder Pliny

Life and Letters of Charles Darwin — Volume 1

Charles Darwin