A Monograph on the Sub-class Cirripedia (Volume 1 of 2): The Lepadidae; Or, Pedunculated Cirripedes
Coral Reefs; Volcanic Islands; South American Geology — Complete
Darwinism stated by Darwin himself: Characteristic passages from the writings of Charles Darwin
Geological Observations on South America
Life and Letters of Charles Darwin — Volume 1
Life and Letters of Charles Darwin — Volume 2
The Autobiography of Charles Darwin
The Descent of Man, and Selection in Relation to Sex
The Descent of Man and Selection in Relation to Sex, Vol. I
The Different Forms of Flowers on Plants of the Same Species
The Effects of Cross & Self-Fertilisation in the Vegetable Kingdom
The Expression of the Emotions in Man and Animals
The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their Habits
The Foundations of the Origin of Species: Two Essays written in 1842 and 1844
The Movements and Habits of Climbing Plants
The Variation of Animals and Plants under Domestication
The Variation of Animals and Plants Under Domestication, Vol. I.
The Variation of Animals and Plants Under Domestication, Volume II (of 2)