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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

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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
Document type
letter (2)
Correspondent
Darwin, C. R.[X]
Pfeffer, Wilhelm[X]
Date
1879
03 (1)
04 (1)
letter