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From G. H. K. Thwaites   28 August 1877

Summary

Thanks for Forms of flowers.

Insects that infest and are parasitic upon the fig fruit.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  28 Aug 1877
Classmark:  DAR 178: 126
Letter no:  DCP-LETT-11119

From George Henry Kendrick Thwaites   [14 February 1860]

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Summary

Questions how natural selection can explain why some cells remain simple and others are modified into highly complex structures.

Reports on the spread in Ceylon of a recently introduced plant.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  [14 Feb 1860]
Classmark:  DAR 205.4: 100
Letter no:  DCP-LETT-2697

From George Henry Kendrick Thwaites   15 May 1862

Summary

Sends CD a quotation from Plato which anticipates the Origin.

Has been enjoying CD’s paper on dimorphism in the Journal of the Linnean Society ["Two forms of Primula", Collected papers 2: 45–63]. He has found similar structures [see Forms of flowers, pp. 116, 122].

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  15 May 1862
Classmark:  DAR 110: B79–80, DAR 171: 3
Letter no:  DCP-LETT-3550

From George Henry Kendrick Thwaites   17 February 1863

Summary

Replies to CD’s letter: dimorphism common in Ceylon Rubiaceae. [See Forms of flowers, p. 286.]

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  17 Feb 1863
Classmark:  DAR 109: A94
Letter no:  DCP-LETT-3994

From G. H. K. Thwaites   8 June 1863

Summary

Dimorphism in Linum.

Situation in some of the lower Algae is analogous to that in phaenogams. In some, conjugation occurs between separate filaments, in others between cells of same filament.

Forwards a letter from S. O. Glenie enclosing specimens of Cassia fistula which show the two forms of the anthers.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  8 June 1863
Classmark:  DAR 178: 121–2
Letter no:  DCP-LETT-4208

From G. H. K. Thwaites   24 September 1863

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Summary

Sends information on the flowers of Cassia roxburghii; will send flowers of all the species of Cassia for CD to study with a view to discovering the law which operates to bring about the differences.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  24 Sept 1863
Classmark:  DAR 48: 74
Letter no:  DCP-LETT-4303

From G. H. K. Thwaites   1 April 1868

Summary

Has circulated CD’s Queries about expression and gives some of his observations of the natives.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  1 Apr 1868
Classmark:  DAR 178: 123
Letter no:  DCP-LETT-6080

From G. H. K. Thwaites   22 July 1868

Summary

GHKT is going to procure some local smoke-coloured fowls and investigate them for CD.

Encloses letter on expression queries from S. O. Glenie.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  22 July 1868
Classmark:  DAR 178: 124; DAR 165: 53
Letter no:  DCP-LETT-6285

From G. H. K. Thwaites   16 October 1868

Summary

On local black-boned fowls,

CD’s new book [Variation], and Pangenesis.

Author:  George Henry Kendrick Thwaites
Addressee:  Charles Robert Darwin
Date:  16 Oct 1868
Classmark:  DAR 178: 125
Letter no:  DCP-LETT-6420
Document type
letter (9)
Author
Thwaites, G. H. K.disabled_by_default
Addressee
Darwin, C. R.disabled_by_default
Correspondent
Date
1860 (1)
1862 (1)
1863 (3)
1868 (3)
1877 (1)