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Darwin, C. R. in correspondent 
Lovén, Sven in correspondent 
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From:
Sven Ludvig (Sven) Lovén
To:
Charles Robert Darwin
Date:
[14 Jan 1876]
Source of text:
Centrum för vetenskapshistoria, Kungl. Vetenskapsakademien (Sven Lovéns arkiv, Utgående brev, vol. B1:5, nr 26, s 331-333)
Summary:

Has sent his paper on Echinoidea [see 10373] as a token of his veneration. He tried to address the confusion in knowledge about the different parts of the exoskeleton of the Echinodermata by tracing certain relations of homology not previously noticed. Much more work is required.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Sven Ludvig (Sven) Lovén
Date:
28 Jan 1876
Source of text:
Centrum för vetenskapshistoria, Kungl. Vetenskapsakademien (Sven Lovéns arkiv, Inkommande brev, vol E1:3)
Summary:

Thanks for SL’s [Études sur les echinoïdées (1875)]. Nothing could be more difficult than the homologies of this group.

Contributor:
Darwin Correspondence Project