Charles Darwin

Life and Letters of Charles Darwin — Volume 1

More Letters of Charles Darwin — Volume 1: A Record of His Work in a Series of Hitherto Unpublished Letters

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

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

The Origin of Species by Means of Natural Selection: Or, the Preservation of Favoured Races in the Struggle for Life, 6th Edition

The Foundations of the Origin of Species: Two Essays written in 1842 and 1844

The Voyage of the Beagle

The Expression of the Emotions in Man and Animals

The Descent of Man, and Selection in Relation to Sex

The Descent of Man and Selection in Relation to Sex, Vol. I

The Autobiography of Charles Darwin

Life and Letters of Charles Darwin — Volume 2

The Power of Movement in Plants

Charles Darwin: His Life Told in an Autobiographical Chapter, and in a Selected Series of His Published Letters

Journal of Researches into the Natural History and Geology of the Countries Visited During the Voyage Round the World of H.M.S. Beagle Under the Command of Captain Fitz Roy, R.N.

Insectivorous Plants

More Letters of Charles Darwin — Volume 2: A Record of His Work in a Series of Hitherto Unpublished Letters

The Formation of Vegetable Mould Through the Action of Worms: With Observations on Their Habits

A Monograph on the Sub-class Cirripedia (Volume 2 of 2): The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.

The Variation of Animals and Plants under Domestication

The Descent of Man and Selection in Relation to Sex, Vol. II (1st Edition)