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 |
To Gaston de Saporta 11 October 1877
Summary
Thanks GdeS for communicating his discovery. It is especially important at a time when several naturalists have declared that development occurs quite suddenly at intervals. Joseph Le Conte in N. America urges that even new families and orders are developed within an extremely short period.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 11 Oct 1877 |
Classmark: | DAR 147: 422 |
Letter no: | DCP-LETT-11179 |
To Gaston de Saporta 24 December 1877
Summary
Such honours as proposal for election to Institut affect CD very little.
GdeS’s idea that dicotyledonous plants were not developed until sucking insects evolved is a splendid one. The suggestion that fertilisation of the surviving members of the most ancient dicotyledons should be studied is a good one. CD hopes GdeS will keep it in mind.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 24 Dec 1877 |
Classmark: | Archives Gaston de Saporta (private collection) |
Letter no: | DCP-LETT-11287 |
To Gaston de Saporta 31 January 1878
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.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 31 Jan 1878 |
Classmark: | Petit and Théodoridès 1959, pp. 210–11 |
Letter no: | DCP-LETT-11341 |
To Gaston de Saporta 4 February [1878]
Summary
The Permian fossil sent by GdeS has stirred up the Kew botanists. Hooker suggests it was a Ceratopteris.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 4 Feb [1878] |
Classmark: | Conry 1972, p. 118 |
Letter no: | DCP-LETT-11347 |
To Gaston de Saporta 15 August 1878
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".
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 15 Aug 1878 |
Classmark: | Archives Gaston de Saporta (private collection) |
Letter no: | DCP-LETT-11661 |
To Gaston de Saporta 22 December 1878
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).
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 22 Dec 1878 |
Classmark: | Archives Gaston de Saporta (private collection) |
Letter no: | DCP-LETT-11803 |
To Gaston de Saporta 19 January 1879
Summary
Thanks GdeS for his photograph; sends his own. Glad to hear GdeS’s work [Le monde des plantes (1879)] is popular in France.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 19 Jan 1879 |
Classmark: | Archives Gaston de Saporta (private collection) |
Letter no: | DCP-LETT-11835 |
To Gaston de Saporta 13 [May] 1881
Summary
Thanks for work sent by GdeS and A. F. Marion [L’évolution du règne végétal 1 (1881)]. CD greatly pleased at boldness with which GdeS expresses his belief in evolution. Some of GdeS’s countrymen have been "a little timid" on this head.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 13 [May] 1881 |
Classmark: | Archives Gaston de Saporta (private collection) |
Letter no: | DCP-LETT-13052 |
To Gaston de Saporta 24 September 1868
Summary
Discusses GdeS’s studies on fossil plants;
response to Origin in France.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 24 Sept 1868 |
Classmark: | DAR 147: 419 |
Letter no: | DCP-LETT-6390 |
To Gaston de Saporta 8 April 1872
Summary
Responds to GdeS’s comments on Descent [see 8246]. Cannot give up belief in close relationship of man to higher Simiae.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 8 Apr 1872 |
Classmark: | Archives Gaston de Saporta (private collection) |
Letter no: | DCP-LETT-8282 |
To Gaston de Saporta 30 May 1874
Summary
Thanks GdeS for his "Études sur la végétation" [Ann. Sci. Nat. (Bot.) 5th ser. 15 (1872): 277–315]. "Nothing can be more important … than your evidence of the extremely slow and gradual manner in which specific forms change."
Hopes GdeS will shed light on whether polymorphic forms like Rubus and Hieracium are generating new species at present; CD doubts this.
Author: | Charles Robert Darwin |
Addressee: | Louis Charles Joseph Gaston (Gaston) de Saporta, comte de Saporta |
Date: | 30 May 1874 |
Classmark: | Archives Gaston de Saporta (private collection) |
Letter no: | DCP-LETT-9476 |