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To C. G. Semper   6 February 1881

Summary

Comments on CGS’s The natural conditions of existence [1881] and on views of Moritz Wagner on geographical distribution.

Discusses cause of variability.

Author:  Charles Robert Darwin
Addressee:  Carl Gottfried Semper
Date:  6 Feb 1881
Classmark:  Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/62)
Letter no:  DCP-LETT-13040

From C. G. Semper   16 July 1881

Summary

Thanks CD for his kind judgment on his book [The natural conditions of existence (1881)].

E. Ray Lankester has written an unfriendly review of it [Nature 23 (1880–1): 405–9].

Author:  Carl Gottfried Semper
Addressee:  Charles Robert Darwin
Date:  16 July 1881
Classmark:  DAR 177: 141
Letter no:  DCP-LETT-13246

To C. G. Semper   19 July 1881

Summary

Thinks CGS right not to reply to critical article by Lankester.

Discusses direct action of environment as cause of variability; the finding of Hermann Hoffmann that direct action of environment affects plants very little.

Author:  Charles Robert Darwin
Addressee:  Carl Gottfried Semper
Date:  19 July 1881
Classmark:  Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/63)
Letter no:  DCP-LETT-13251
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letter (3)
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Correspondent
Date
1881
02 (1)
07 (2)
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