1. Barbara G.Beddall, ?Wallace, Darwin, and Edward Blyth: Further Notes on the Development of Evolution Theory?, J. Hist. Biol., 5 (1972), 155, 157. The full text of the part of Blyth's letter that refers to Wallace appears on pp. 155?158.
2. Alfred Russel Wallace, ?On the Law Which Has Regulated the Introduction of New Species?, Ann. Mag. Nat. Hist. [2], 16 (1855), 184?196.
3. Ibid., p. 186.
4. H. LewisMcKinney, ?Alfred Russel Wallace and the Discovery of Natural Selection?, J. Hist. Med., 21 (1966), 350; Leonard G. Wilson, ed., Sir Charles Lyell's Scientific Journals on the Species Question (New Haven: Yale University Press, 1970), pp. xli?xlix, 52?55, 65?66, 80; Barbara G. Beddall, ?Wallace, Darwin, and the Theory of Natural Selection: A Study in the Development of Ideas and Attitudes?, J. Hist. Biol., 1 (1968), 261?323.
5. Gavin de Beer, ed., ?Darwin's Journal?, Bull. Brit. Mus. (Nat. Hist.), Hist. Ser., 2 (1959), 13; comas added.