1. Carl J. Bajema, ?Charles Darwin on Man in the First Edition of the Origin of Species,? J. Hist. Biol., 21 (1988), 403?410
2. See Peter J. Bowler, The Non-Darwinian Revolution: Reinterpreting a Historical Myth (Baltimore: Johns Hopkins University Press, 1988).
3. Peter J. Bowler, Evolution: The History of an Idea (Berkeley: University of California Press, 1984), p. 216.
4. Charles Darwin, On the Origin of Species by Means of Natural Selection; or the Preservation of Favoured Races in the Struggle for Life (London: John Murray, 1859), p. 488.
5. Charles Darwin, Autobiography, ed. Nora Barlow (New York: Harcourt, Brace and World, 1958), pp. 130?131.