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Saporta, Gaston de in correspondent 
1870-1879::1878 in date 
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From:
Charles Robert Darwin
To:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:
31 Jan 1878
Source of text:
Petit and Théodoridès 1959, pp. 210–11
Summary:

Has sent GdeS’s drawing to Hooker. He, Oliver, and Thiselton-Dyer have been perplexed by it.

L. Lesquereux’s discoveries in the Cincinnati Lower Silurian beds.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:
4 Feb [1878]
Source of text:
Conry 1972, p. 118
Summary:

The Permian fossil sent by GdeS has stirred up the Kew botanists. Hooker suggests it was a Ceratopteris.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:
15 Aug 1878
Source of text:
Archives Gaston de Saporta (private collection)
Summary:

It would be false to pretend he cares very much about his election to the Institut.

Glad to hear GdeS plans to publish a work on the more ancient fossil plants. Hopes he will report also on the more recent Tertiary forms because the close gradation of such forms is "a fact of paramount importance for the principle of evolution".

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:
22 Dec 1878
Source of text:
Archives Gaston de Saporta (private collection)
Summary:

Thanks for GdeS’s Le monde des plantes [1879].

CD has just read "Végétation polaire" [C. R. Congr. Int. Sci. Geogr. 1 (1878): 197–242] with interest. Hooker gave it conspicuous place in his Royal Society Address (1878).

Contributor:
Darwin Correspondence Project
From:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
To:
Charles Robert Darwin
Date:
16 Feb 1878
Source of text:
DAR 177: 35
Summary:

Discusses the difficulty of reconstructing angiosperm phylogeny.

Discovery of polar fossil plants helps explain migrations.

Hooker has identification of GdeS’s Permian fossil.

Contributor:
Darwin Correspondence Project
From:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
To:
Charles Robert Darwin
Date:
9 Aug 1878
Source of text:
DAR 177: 36
Summary:

Congratulations on election to the French Academy of Sciences, Botany Section.

Contributor:
Darwin Correspondence Project