Journal of the Proceedings of the Linnean Society, Vol. III, No. 9, pp. 45-62. London: Longman, Brown, Green, et al, 1858." /> DARWIN, Charles (1809-1882) and Alfred Russel WALLACE (1823-1913). "On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection," extract from: <I>Journal of the Proceedings of the Linnean Society</I>, Vol. III, No. 9, pp. 45-62. London: Longman, Brown, Green, et al, 1858. | Christie's