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To Gaston de Saporta   12 August 1876

Summary

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

Author:  Charles Robert Darwin
Addressee:  Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:  12 Aug 1876
Classmark:  Archives Gaston de Saporta (private collection)
Letter no:  DCP-LETT-10568

To Gaston de Saporta   10 September 1876

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.

Author:  Charles Robert Darwin
Addressee:  Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Date:  10 Sept 1876
Classmark:  Archives Gaston de Saporta (private collection)
Letter no:  DCP-LETT-10591

From Gaston de Saporta   2 September 1876

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.

Author:  Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta
Addressee:  Charles Robert Darwin
Date:  2 Sept 1876
Classmark:  DAR 177: 33
Letter no:  DCP-LETT-10587
Document type
letter (3)
Correspondent
Darwin, C. R.[X]
Saporta, Gaston de[X]
Date
1876
08 (1)
09 (2)
letter