What's in a word? Coming to terms in the Darwinian revolution / John Beatty.
Abstract:
"In order to understand [problems posed by Darwin's "Origin of Species"] and how [they were] rectified by Darwin's successors, it is necessary to take into account certain ways in which theory change is affected by the theory-laden meanings of scientific terms."
Journal of the history of biology T. 15 (1982), p. 215-239