To Wilhelm Pfeffer 23 March 1879
Summary
Seeks clarification of statements on sleep movements on p. 29 of WFPP’s work [Die periodischen Bewegungen der Blattorgane (1875)].
Author: | Charles Robert Darwin |
Addressee: | Wilhelm Friedrich Philipp (Wilhelm) Pfeffer |
Date: | 23 Mar 1879 |
Classmark: | Tenri Central Library, Tenri University, Nara |
Letter no: | DCP-LETT-11948 |
From Wilhelm Pfeffer 22 April 1879
Summary
In response to CD’s query, discusses sleep movements of plants. Recommends papers on subject.
Author: | Wilhelm Friedrich Philipp (Wilhelm) Pfeffer |
Addressee: | Charles Robert Darwin |
Date: | 22 Apr 1879 |
Classmark: | DAR 209.14: 187 |
Letter no: | DCP-LETT-12008 |
From Wilhelm Pfeffer 25 November 1880
Summary
Thanks for Movement in plants.
Describes work [on Pflanzenphysiologie, 2 vols. (1881)].
Author: | Wilhelm Friedrich Philipp (Wilhelm) Pfeffer |
Addressee: | Charles Robert Darwin |
Date: | 25 Nov 1880 |
Classmark: | DAR 174: 37 |
Letter no: | DCP-LETT-12856 |
From Wilhelm Pfeffer 24 October 1881
Summary
Will send 2d vol. [of his Pflanzenphysiologie (1881)].
CD has occasionally misinterpreted him in Movement in plants; by "after-working" (Nachwirkung) he means "after-working of preceding movements", not of the irritating cause [light].
Author: | Wilhelm Friedrich Philipp (Wilhelm) Pfeffer |
Addressee: | Charles Robert Darwin |
Date: | 24 Oct 1881 |
Classmark: | DAR 174: 38, 38/1 |
Letter no: | DCP-LETT-13425 |
From Wilhelm Pfeffer 6 November 1881
Summary
It is impossible to trace the direct connections between stimuli and responses in plant movements. Disagrees with much of Julius von Wiesner [Die Bewegungsvermögen der Pflanzen (1881)]. Disagrees with CD on induced movements and circumnutation.
Author: | Wilhelm Friedrich Philipp (Wilhelm) Pfeffer |
Addressee: | Charles Robert Darwin |
Date: | 6 Nov 1881 |
Classmark: | DAR 174: 39 |
Letter no: | DCP-LETT-13464 |
letter | (5) |
Pfeffer, Wilhelm | (4) |
Darwin, C. R. | (1) |
Darwin, C. R. | (4) |
Pfeffer, Wilhelm | (1) |