ID# 2128:
Charles Davenport letter to Karl Pearson, emphasizing his break with Bateson and De Vries on environmentally induced mutations (7/7/1903)
Date:
1903
Pages: (1|2|3)
Source:
University College London, KP, 674/1

Charles Davenport letter to Karl Pearson, emphasizing his break with Bateson and De Vries on environmentally induced mutations (7/7/1903)

2. The University of Chicago haviour; and a foci of Darwin's acceptance of sporting as one means of producing races, I did not wish to exclude it; the error so as his evidence & that addressed since has not been overthrown ((See Origin of Species, Chap I, paragraph 5, "sporting plants" [mutations]). In my final sentence [underscore]also[end underscore] is the emphatic word - It may be paraphrased as thus: -- "Through mutation to be sure, as Darwin and a host since have ascertained[?]; but [underscore]also[end underscore] (as some recent biologists, DeVries and Bateson, seem to forget) through the direct action of Environment specific changes may be produced." Of course this direct action of environment has nothing to do with inheritance of acquired characters. Very [crossed out 'likely'] possibly the [?] of that [?] Pectaris planted at Eddystone might become like then in the first subsequent generation - so far that matter might Pecten jacobus become P. maximus if transplanted to Eddystone or any point on the English Channel. Or P. opercularis might become P. irradius on Long Island Sound. Nevertheless, by the practical criteria of species they are distinct species and would, I trust, continue to be so regarded after the Experiment indicated had resulted as suggested. As I have said I do not understand the ground of your criticism. I have however considered your proposal to publish only the Parts I- IV of the paper. - You know, Pearson, how little comes to a [illegible] [end]

Copyright 1999-2004: Cold Spring Harbor Laboratory; American Philosophical Society; Truman State University; Rockefeller Archive Center/Rockefeller University; University of Albany, State University of New York; National Park Service, Statue of Liberty National Monument; University College, London; International Center of Photography; Archiv zur Geschichte der Max-Planck-Gesellschaft, Berlin-Dahlem; and Special Collections, University of Tennessee, Knoxville.
The images and text in this Archive are solely for educational and scholarly uses. The materials may be used in digital or print form in reports, research, and other projects that are not offered for sale. Materials in this archive may not be used in digital or print form by organizations or commercial concerns, except with express permission.