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Darwin, C. R. in addressee 
1860-1869 in date 
Claus, C. F. in correspondent 
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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
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