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1870-1879 in date 
Darwin, C. R. in correspondent 
Semper, C. G. in correspondent 
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Showing 116 of 16 items

From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
21 Jan [1874]
Source of text:
Christie’s (dealers) (8 June 2005)
Summary:

Asks for information about the title and date of Semper’s essay disputing CD’s theory of coral reefs.

Contributor:
Darwin Correspondence Project
From:
Carl Gottfried Semper
To:
Charles Robert Darwin
Date:
25 Jan 1874
Source of text:
DAR 177: 135
Summary:

Discusses coral reefs

and encloses a copy of his "Reisebericht" [Z. Wiss. Zool. 13 (1863): 538–70], as requested by CD.

Contributor:
Darwin Correspondence Project
From:
Carl Gottfried Semper
To:
Charles Robert Darwin
Date:
8 Feb 1874
Source of text:
DAR 177: 136
Summary:

Comments on G. H. Lewes’s book [The life and works of Goethe (1855)].

Contributor:
Darwin Correspondence Project
From:
Carl Gottfried Semper
To:
Charles Robert Darwin
Date:
26 Apr 1877
Source of text:
DAR 177: 137
Summary:

Explains why he did not add his photograph to the album presented by German naturalists to CD. Instead he wishes to dedicate to CD his work on the vertebrate-type eyes on the back of some Mollusca. [Enclosed is a MS introduction to this work, Über Sehorgane von Typus der Wirbelthieraugen auf dem Rücken von Schnecken.].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
30 Apr 1877
Source of text:
J. A. Stargardt (dealers) (March 1994); Kotte Autographs (dealers) (March 2016)
Summary:

Is honoured by CGS’s dedication [see 10942].

His observation of the dorsal eyes of Onchidium is interesting and surprising.

Contributor:
Darwin Correspondence Project
From:
Carl Gottfried Semper
To:
Charles Robert Darwin
Date:
13 July 1877
Source of text:
DAR 177: 138
Summary:

Sends work on dorsal eyes of Onchidium ["Über Schneckenaugen", Arch. Mikrosk. Anat. 14 (1877): 118–24]. Comments on work.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
18 July 1877
Source of text:
Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/56)
Summary:

Thanks for CGS’s work [“Über Schneckenaugen” (1877)].

Contributor:
Darwin Correspondence Project
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
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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
thumbnail
From:
Charles Robert Darwin
To:
Carl Gottfried Semper
Date:
2 Oct 1879
Source of text:
Universitäts- und Landesbibliothek Düsseldorf (slg 60/Dok/61)
Summary:

Discusses CGS’s account of Pellew Islands. Still believes atolls and barrier reefs in Pacific indicate subsidence. But cases like Pellew Islands, if frequent, would make his conclusions of little value.

Contributor:
Darwin Correspondence Project