Three papers on the tendency of species to form varieties
Subtitle: and on the perpetuation of varieties and species by natural means of selection.
Contributors: Darwin, Charles, 1809-1882.; Wallace, Alfred Russel, 1828-1913.
Publisher: s.n.
Published: 1950
Place of publication: [London?
Language: eng
Number of pages: 6308
Subjects: Variation (Biology); Evolution
Other titles: Tendency of species to form varieties; On the tendency of varieties to depart indefinitely from the original type
Work titles: On the tendency of species to form varieties. 195-?
Notes: Caption title.

Running title: Tendency of species to form varieties.

Photocopy from: Zoologist.  London, 1858, v. 16.  Cf. Freeman 349 and 1700.
Table of contents: value: I. Extract from an unpublished work on species by C. Darwin, Esq.; value: 2. Abstract of a letter from C. Darwin, Esq., to Prof. Asa Gray.; value: 3. On the tendency of varieties to depart indefinitely from the original type / by A.R. Wallace.