A compendium of the history and philosophy of wildlife from ancient mythology to scientific ideas of the XIX-XX centuries. Content: 1.1 Knowledge of wildlife: a long way from myths to science. 1.2 The evolution of pre-Darwinian ideas about the constancy and variability of species of living organisms. 1.3 The driving forces of wildlife development. Classical Darwinism: the struggle for existence, natural selection, inheritance of variability. 1.4 Genetic views on the hereditary transmission of species characteristics (preformism, epigenesis, pangenesis, neo-Darwinism). Literature.

Darwin's ideas on variation, heredity, and development differ significantly from twentieth-century views. First, Darwin held that environmental changes, acting either on the reproductive organs or the body, were necessary to generate variation. Second, heredity was a developmental, not a transmissional, process; variation was a change in the developmental process of change. An analysis of Darwin's elaboration and modification of these two positions from his early notebooks (1836-1844) to the last edition of the /Variation of Animals and Plants Under Domestication/ (1875) (...) complements previous Darwin scholarship on these issues. Included in this analysis is a description of the way Darwin employed the distinction between transmission and development, as well as the conceptual relationship he saw between heredity and variation. This paper is part of a larger project comparing commitments regarding variation during the latter half of the nineteenth century. (shrink)