From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
19 July 1878
Source of text:
Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/57)
Summary:
Offers to give CGS a writing machine.
Contributor:
Darwin Correspondence Project
From:
Carl Gottfried Semper
To:
Charles Robert Darwin
Date:
22 July 1878
Source of text:
DAR 177: 139
Summary:
Thanks CD for his kind letter and accepts his offer of a writing machine.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
24 July [1878]
Source of text:
Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/58)
Summary:
Pleased CGS will accept machine.
Contributor:
Darwin Correspondence Project
From:
Carl Gottfried Semper
To:
Charles Robert Darwin
Date:
5 Oct 1878
Source of text:
DAR 177: 140
Summary:
Thanks CD for writing machine.
Recalls visit by CD’s son [Francis].
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
26 Nov [1878]
Source of text:
Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/59)
Summary:
Discusses views of Moritz Wagner on modification of species. Two different cases: one in which a species is modified in the same country and cases in which a species splits. Glad CGS is taking up subject.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
30 Nov 1878
Source of text:
Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/60)
Summary:
Discusses effect of isolation on species modification and the views of Moritz Wagner on the subject.
Contributor:
Darwin Correspondence Project
From:
Carl Gottfried Semper
To:
Charles Robert Darwin
Date:
6 Dec 1878
Source of text:
DAR 202: 120
Summary:
Asks whether he may use CD’s letters in his work [Die natürlichen Existenzbedingungen der Thiere (1880)] in order to show that Moritz Wagner has misrepresented CD’s views.
Discusses the influence of isolation and external conditions on animals, and the relative importance of the direct effect of external conditions and of selection in bringing about change.
Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
[after 6 Dec 1878]
Source of text:
DAR 202: 120v
Summary:
Gives CGS permission to use his letters in any way he thinks fit.
Discusses the direct effect of external conditions as an agent of change in organisms; has encountered many cases since the publication of Origin.
Contributor:
Darwin Correspondence Project
