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From J. J. Weir   6 July 1875

Summary

Yellow flowers occurring on a purple Cytisus grafted onto a yellow stock.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  6 July 1875
Classmark:  DAR 181: 85
Letter no:  DCP-LETT-10044

From J. J. Weir   7 July 1875

Summary

Yellow and purple flowers occur on plant grafted with Cytisus purpureus, but only on separate racemes. Only yellow blooms seed.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  7 July 1875
Classmark:  DAR 181: 86
Letter no:  DCP-LETT-10050

From J. J. Weir   9 July 1875

Summary

Sends CD some of the Cytisus, which has produced yellow flowers on a purple graft.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  9 July 1875
Classmark:  DAR 181: 87
Letter no:  DCP-LETT-10055

From J. J. Weir   27 December 1881

Summary

Discusses mule’s resemblance to parents.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  27 Dec 1881
Classmark:  DAR 148: 467
Letter no:  DCP-LETT-13582

From J. J. Weir   [before 30 May 1868]

Summary

Reversion of tamed animals to wild behaviour.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 30 May 1868]
Classmark:  DAR 181: 73
Letter no:  DCP-LETT-5748

From J. J. Weir   [after 27 February] 1868

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Summary

Trusts his paper ["Apterous Lepidoptera" (1867), printed for the West Kent Natural History, Microscopical, and Photographic Society] showed that he is thoroughly a disciple of CD.

Cites evidence that birds undoubtedly distinguish colours. [see Descent 2: 110.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [after 27 Feb] 1868
Classmark:  DAR 84.1: 77–80
Letter no:  DCP-LETT-5939

From J. J. Weir   [before 3] March 1868

Summary

Aggressive behaviour of a bullfinch toward new arrival in JJW’s aviary.

Sexual differences in goldfinches: size of beaks.

Sexual selection in Lepidoptera.

Thinks Dr Alex Wallace’s observations on Bombyx not conclusive in proving that no preference is shown by females.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 3] Mar 1868
Classmark:  DAR 84.1: 51–2 and DAR 82: A107–8
Letter no:  DCP-LETT-5964

From J. J. Weir   [before 5] March 1868

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Summary

Does not think females give preference to any males. Coloration, pugnacity; cases of use of colour in struggle for existence. [see Descent 1: 395.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 5] Mar 1868
Classmark:  DAR 82: A109–12
Letter no:  DCP-LETT-5985

From J. J. Weir   7 March 1868

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Summary

Various facts about birds: pairing, finding new mates, protective coloration, polygamy, sexual differences.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  7 Mar 1868
Classmark:  DAR 86: A21–4
Letter no:  DCP-LETT-5995

From J. J. Weir   11 March 1868

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Summary

Courtship of goldfinches. Male display. [See Descent 2: 95.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  11 Mar 1868
Classmark:  DAR 84.1: 53–6
Letter no:  DCP-LETT-6005

From J. J. Weir   16 March 1868

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Summary

Sexual selection of pigeons, ducks;

polygamous birds.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  16 Mar 1868
Classmark:  DAR 84.1: 57–60
Letter no:  DCP-LETT-6016

From J. J. Weir   23 March 1868

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Summary

Relates a variety of facts about sexual selection in birds. [See Descent 2: 104–5.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  23 Mar 1868
Classmark:  DAR 84.1: 61–4
Letter no:  DCP-LETT-6041

From J. J. Weir   24 March 1868

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Summary

Experiments to test Wallace’s theory that brightly coloured caterpillars are rejected by birds. [See Descent 1: 417.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  24 Mar 1868
Classmark:  DAR 84.1: 65–8
Letter no:  DCP-LETT-6046

From J. J. Weir   [26] March 1868

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Summary

Proportions of sexes in birds as reported by bird-catchers.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [26] Mar 1868
Classmark:  DAR 86: C5–9
Letter no:  DCP-LETT-6056

From J. J. Weir   31 March 1868

Summary

Sexual behaviour of chaffinches.

Numbers of female linnets in September.

His experiments on brightly coloured larvae [as food], testing A. R. Wallace’s theory.

His observations of a rookery make him wonder whether it may not be more difficult than we think for birds to pair.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  31 Mar 1868
Classmark:  DAR 46.1: 98–101, DAR 84.1: 69–70
Letter no:  DCP-LETT-6074

From J. J. Weir   [before 28 April] 1868

Summary

Proportion of sexes in chaffinches.

Pugnacity of blackbirds and robins.

Harrison Weir reports up to nine eggs in starling nests.

Newspaper report of a sheep born with its owner’s brand.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 28 Apr] 1868
Classmark:  DAR 86: C1–2, DAR 84.1: 73–4
Letter no:  DCP-LETT-6078

From J. J. Weir   5 April 1868

Summary

George Rolleston’s son was born with a scar on his knee exactly where GR cut himself with a knife years before his marriage. Gives several other examples of inherited mutilation.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  5 Apr 1868
Classmark:  DAR 181: 74
Letter no:  DCP-LETT-6093

From J. J. Weir   16 April 1868

Summary

Describes a curious litter of rabbits.

Pairing of rooks, courtship of golden pheasant.

Behaviour of finch hybrids.

Seasonal coloration of birds; bright plumage results from sexual selection.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  16 Apr 1868
Classmark:  DAR 84.1: 71–2, 140, DAR 181: 75
Letter no:  DCP-LETT-6125

From J. J. Weir   20 April 1868

Summary

Instinct in birds; nest-building.

Inheritance of acquired characters.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  20 Apr 1868
Classmark:  DAR 181: 76
Letter no:  DCP-LETT-6130

From J. J. Weir   28 April – 4 May 1868

Summary

Observations on root-climbers. Variegated and arborescent varieties of Hedera.

[CD’s notes are for his reply, 6165.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  28 Apr – 4 May 1868
Classmark:  DAR 181: 77
Letter no:  DCP-LETT-6145
Document type
letter (35)
Author
Weir, J. J.[X]
Addressee
Correspondent
Date
1868 (22)
1869 (3)
1870 (3)
1872 (2)
1873 (1)
1875 (3)
1881 (1)
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