24 public-domain matches
Charles Darwin
Charles Darwin and the Origin of Species; Addresses, &c., in America and England in the Year of the Two Anniversaries

Charles Darwin and the theory of natural selection
Charles Darwin und Alfred Russel Wallace Ihre ersten Publicationen über die Entstehung der Arten nebst einer Skizze ihres Lebens und einem Verzeichniss ihrer Schriften

Charles Darwin's The Voyage of the Beagle:
Charles Darwin: His Life Told in an Autobiographical Chapter, and in a Selected Series of His Published Letters
Bloomsbury Scientists
Darwin, Charles. The Voyage Of The Beagle [1839] [2023]
Descent of Man, and Selection in Relation to Sex
Descent of Man, and Selection in Relation to Sex
Fact and Fiction

Insectivorous plants

Journal of Researches during the Voyage of H.M.S. "Beagle"
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.
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.
Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle round the world
Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle round the world
Life and Letters of Charles Darwin — Volume 1
Life and Letters of Charles Darwin — Volume 1
Life and letters of Charles Darwin v.1
Marking Time
More Letters of Charles Darwin — Volume 1: A Record of His Work in a Series of Hitherto Unpublished Letters
More Letters of Charles Darwin — Volume 1: A Record of His Work in a Series of Hitherto Unpublished Letters

On parthenogenesis
On the Origin of Species By Means of Natural Selection: Or, the Preservation of Favoured Races in the Struggle for Life
On the Origin of Species By Means of Natural Selection: Or, the Preservation of Favoured Races in the Struggle for Life

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