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Darwin, C. R. in addressee 
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From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
28 Aug 1877
Source of text:
DAR 178: 126
Summary:

Thanks for Forms of flowers.

Insects that infest and are parasitic upon the fig fruit.

Contributor:
Darwin Correspondence Project
From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
[14 Feb 1860]
Source of text:
DAR 205.4: 100
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.

Contributor:
Darwin Correspondence Project
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From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
15 May 1862
Source of text:
DAR 110: B79–80, DAR 171: 3
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].

Contributor:
Darwin Correspondence Project
From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
17 Feb 1863
Source of text:
DAR 109: A94
Summary:

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

Contributor:
Darwin Correspondence Project
From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
8 June 1863
Source of text:
DAR 178: 121–2
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.

Contributor:
Darwin Correspondence Project
From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
24 Sept 1863
Source of text:
DAR 48: 74
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.

Contributor:
Darwin Correspondence Project
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From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
1 Apr 1868
Source of text:
DAR 178: 123
Summary:

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

Contributor:
Darwin Correspondence Project
From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
22 July 1868
Source of text:
DAR 178: 124; DAR 165: 53
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.

Contributor:
Darwin Correspondence Project
From:
George Henry Kendrick Thwaites
To:
Charles Robert Darwin
Date:
16 Oct 1868
Source of text:
DAR 178: 125
Summary:

On local black-boned fowls,

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

Contributor:
Darwin Correspondence Project