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From Richard Spruce   [1865–77]

Summary

Notes on various instances of dimorphism.

Author:  Richard Spruce
Addressee:  Charles Robert Darwin
Date:  [1865–77]
Classmark:  DAR 109: B119
Letter no:  DCP-LETT-4372

From Richard Spruce to J. D. Hooker   29 July 1864

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Summary

Gives an extract from his notes on Marcgravia umbellata, an epiphyte that might be the plant that Bates refers to as matador.

Author:  Richard Spruce
Addressee:  Joseph Dalton Hooker
Date:  29 July 1864
Classmark:  DAR 157.2: 111
Letter no:  DCP-LETT-4577

From Richard Spruce   [before 1 April 1869]

Summary

Sends CD a paper ["Ant-agency in plant structure", published in Spruce Notes of a botanist on the Amazon and Andes, ed. A. R. Wallace (1908)] on plant structures he believes are the work of insects; asks him to forward it to the Linnean Society [read 15 Apr 1869].

Writes of his support for the Origin, before which he had been much concerned by the delimitation of so-called species.

Author:  Richard Spruce
Addressee:  Charles Robert Darwin
Date:  [before 1 Apr 1869]
Classmark:  DAR 177: 241
Letter no:  DCP-LETT-6690

To Richard Spruce   1 April 1869

Summary

RS’s facts are remarkable. A year or two ago CD would not have believed ants could produce an inherited effect, but he has "lately come to believe rather more in inherited mutations". However, CD is not satisfied that the sacs are inherited and urges RS to produce any other evidence he might have.

Author:  Charles Robert Darwin
Addressee:  Richard Spruce
Date:  1 Apr 1869
Classmark:  Spruce 1908, 2: 385
Letter no:  DCP-LETT-6691

From Richard Spruce   15 April 1869

Summary

Describes the floral structure and fertilisation of some melastomes;

discusses the direct agency of insects in modifying the structure of flowers.

Author:  Richard Spruce
Addressee:  Charles Robert Darwin
Date:  15 Apr 1869
Classmark:  DAR 177: 242
Letter no:  DCP-LETT-6697
Document type
letter (5)
Correspondent
Date
1864 (1)
1865 (1)
1869 (3)
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