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Claus, C. F. in author 
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DCP-LETT-6575

From:
Carl Friedrich Claus
To:
Charles Robert Darwin
Date:
24 Jan 1869
Source of text:
DAR 161: 176
Summary:

Sends a paper on reproductive modes of Leptodera ["Organisation und Fortpflanzen von Leptodera", Schr. Ges. Beförd. Naturw. Marburg (1869)].

Criticises Ernst Haeckel’s work as too unripe and enthusiastic.

Asks CD for some specimens of cirripedes in pupal stage for a work in progress.

Contributor:
Darwin Correspondence Project

DCP-LETT-6605

From:
Carl Friedrich Claus
To:
Charles Robert Darwin
Date:
6 Feb 1869
Source of text:
DAR 161: 177
Summary:

Pleased by CD’s good opinion and offer to provide material. Discusses work he would do on cirripedes.

Moritz Wagner’s views on migration of species;

his doubts about Fritz Müller’s views on developmental stages of Crustacea.

Contributor:
Darwin Correspondence Project

DCP-LETT-6671

From:
Carl Friedrich Claus
To:
Charles Robert Darwin
Date:
19 Mar 1869
Source of text:
DAR 161: 178
Summary:

The cirripede material mentioned in CD’s letter of 10 Feb has not arrived. [Asks CD to inquire of Williams and Norgate, who forwarded it.]

Contributor:
Darwin Correspondence Project

DCP-LETT-10879

From:
Carl Friedrich Claus
To:
Charles Robert Darwin
Date:
5 Mar 1877
Source of text:
DAR 161: 179
Summary:

Has read in the newspapers about the album of photographs of German scientists sent in tribute to CD. His name and photograph are missing only because he was not asked to participate. CC assures CD he is one of his ardent supporters.

Contributor:
Darwin Correspondence Project
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