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To Gaston de Saporta   30 May 1874


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
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letter (1)
Darwin, C. R.disabled_by_default
Saporta, Gaston dedisabled_by_default