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DCP-LETT-10568

From:
Charles Robert Darwin
To:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:
12 Aug 1876
Source of text:
Archives Gaston de Saporta (private collection)
Summary:

Thanks GdeS for his Recherches sur les végétaux fossiles [1876].

Contributor:
Darwin Correspondence Project

DCP-LETT-10587

From:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
To:
Charles Robert Darwin
Date:
2 Sept 1876
Source of text:
DAR 177: 33
Summary:

Claims to have proved the great antiquity of several plant races. But this does not contradict the tendency to vary. Insists that heredity can make permanent varieties of sufficient duration to occur as fossils.

Contributor:
Darwin Correspondence Project

DCP-LETT-10591

From:
Charles Robert Darwin
To:
Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:
10 Sept 1876
Source of text:
Archives Gaston de Saporta (private collection)
Summary:

Hopes GdeS will publish on subjects discussed in his letter [10587]. CD had noted similar persistence of variation in fossil shells.

Calls his attention to Nägeli’s work on Hieracium.

Expresses skepticism about O. Heer’s view that dicotyledonous plants developed suddenly. Believes they must have developed slowly in some part of the globe completely isolated from other regions.

Contributor:
Darwin Correspondence Project
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