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:
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:
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:
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
