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DCP-LETT-1795

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
10 Dec 1855
Source of text:
American Philosophical Society (Mss.B.D25.118)
Summary:

Mentions seeing GHKT at BAAS meeting at Oxford [1847].

Reports he is working on variation of species. Asks about varieties of pigeons and other poultry, and asks for specimens from Ceylon.

Contributor:
Darwin Correspondence Project

DCP-LETT-1837

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
8 Mar 1856
Source of text:
American Philosophical Society (Mss.B.D25.125)
Summary:

Hopes GHKT will publish on variations in plant species at different elevations. Asks about variations among plants on heights of Ceylon.

Promises to publish on the species question.

Asks for pigeons’ skins from India or Ceylon, and for ducks’ skeletons. Mentions help promised by E. F. Kelaart.

Contributor:
Darwin Correspondence Project

DCP-LETT-2211

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
7 Feb [1858]
Source of text:
American Philosophical Society (Mss.B.D25.150)
Summary:

Thanks GHKT for letter on plant acclimatisation and variation among alpine and lowland forms in Ceylon.

Contributor:
Darwin Correspondence Project

DCP-LETT-3606

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
15 June [1862]
Source of text:
American Philosophical Society (Mss.B.D25.278)
Summary:

Refers to his Primula paper [Collected papers 2: 45–63]. Asks GHKT to investigate a similar case in Cinchona.

Contributor:
Darwin Correspondence Project

DCP-LETT-3613

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
20 June [1862]
Source of text:
American Philosophical Society (Mss.B.D25.280)
Summary:

Asks for information concerning heterostyled and dioecious plants.

Contributor:
Darwin Correspondence Project

DCP-LETT-4067

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
30 Mar [1863]
Source of text:
American Philosophical Society (Mss.B.D25.293)
Summary:

Thanks GHKT for specimens of Sethia. Discusses functions of their dimorphism for insect fertilisation.

Discusses polymorphism and fertilisation in Lythraceae.

Asks for seed of Limnanthemum.

Describes his interest in galls.

Discusses curious specimens of Gomphia and Lesemia.

Contributor:
Darwin Correspondence Project

DCP-LETT-4256

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
29 July [1863]
Source of text:
American Philosophical Society (Mss.B.D25.295)
Summary:

Thanks GHKT for Limnanthemum seed.

Comments on his view of algal reproduction.

Discusses flower of Cassia.

Sends photograph of himself.

Contributor:
Darwin Correspondence Project

DCP-LETT-2670

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
31 Jan [1868]
Source of text:
American Philosophical Society (Mss.B.D25.325)
Summary:

Asks GHKT about eyes of screaming elephants.

Contributor:
Darwin Correspondence Project

DCP-LETT-5872

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
13 Feb [1868]
Source of text:
American Philosophical Society (Mss.B.D25.341)
Summary:

Asks whether mane in male of Macacus silenus protects it from bites or is merely ornamental.

Contributor:
Darwin Correspondence Project

DCP-LETT-6184

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
19 May [1868]
Source of text:
American Philosophical Society (Mss.B.D25.342)
Summary:

GHKT should not take more trouble about human expression. Discusses contraction of orbicular muscles in elephants.

Asks about colour of first plumage of breeds of Ceylon fowls in which hens alone are coloured.

Contributor:
Darwin Correspondence Project

DCP-LETT-6344

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
2 Sept 1868
Source of text:
American Philosophical Society (Mss.B.D25.354)
Summary:

Thanks GHKT and S. O. Glenie for information about fowls.

Contributor:
Darwin Correspondence Project

DCP-LETT-6395

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
28 Sept [1868]
Source of text:
American Philosophical Society (Mss.B.D25.343)
Summary:

Asks him to thank E. L. Layard for trouble taken.

Says Zoological Society "very foolishly" wants no specimens of domestic varieties [from Ceylon].

Contributor:
Darwin Correspondence Project

DCP-LETT-6431

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
26 Oct [1868]
Source of text:
American Philosophical Society (Mss.B.D25.335)
Summary:

Encloses Queries about expression.

Contributor:
Darwin Correspondence Project

DCP-LETT-6514

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
29 Dec 1868
Source of text:
American Philosophical Society (Mss.B.D25.358)
Summary:

Discusses experiments in breeding fowls.

Comments on letter from S. O. Glenie [see 6440] concerning the eyes of trumpeting elephants.

Contributor:
Darwin Correspondence Project

DCP-LETT-10913

From:
Charles Robert Darwin
To:
George Henry Kendrick Thwaites
Date:
26 Mar 1877
Source of text:
American Philosophical Society (Mss.B.D25.508)
Summary:

Thanks for specimens [of insects].

Wonders whether difference between male and female plays part in fertilisation of fig.

Flowers of Oxalis sensitiva, sent long ago, are trimorphic and cleistogamic.

Contributor:
Darwin Correspondence Project
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