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From J. J. Weir   [1–13] May 1869

Summary

South Down sheep: variability in colouring and patterning of lambs compared with constancy of adult coat.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [1–13] May 1869
Classmark:  DAR 181: 79
Letter no:  DCP-LETT-6723

To J. J. Weir   13 May [1869]

Summary

Comments on paper by JJW ["On insects and insectivorous birds", Trans. R. Entomol. Soc. Lond. (1869): 21–6]. JJW’s verification of A. R. Wallace’s suggestion regarding inheritance is quite a discovery.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  13 May [1869]
Classmark:  DAR 148: 321
Letter no:  DCP-LETT-6746

To J. J. Weir   20 May [1869]

Summary

Asks for information about male birds migrating before females.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  20 May [1869]
Classmark:  DAR 148: 322
Letter no:  DCP-LETT-6753

From J. J. Weir   26 May 1869

Summary

Migratory male nightingales and blackcaps arrive before females [see Descent 1: 259].

Discusses chaffinch "Peggers".

Disagrees with CD’s opinion that canary mules are fertile.

Display of colour of greenfinches in courtship.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  26 May 1869
Classmark:  DAR 86: A52a-c, DAR 84.1: 143
Letter no:  DCP-LETT-6758

To J. J. Weir   27 May [1869]

Summary

Thanks for information about bird migration.

Comments on canary hybridisation.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  27 May [1869]
Classmark:  DAR 148: 323
Letter no:  DCP-LETT-6759

From J. J. Weir   June 1869

Summary

Loss of juvenile colouring in South Down sheep.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  June 1869
Classmark:  DAR 181: 80
Letter no:  DCP-LETT-6763

To J. J. Weir   1 July [1869]

Summary

"My health got so bad I could do nothing at Down".

Gives information about migration of male and female birds.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  1 July [1869]
Classmark:  DAR 148: 324
Letter no:  DCP-LETT-6810

From John Jenner Weir   17 March 1870

Summary

Describes the unusual appearance of a horse whose mother had previously borne a foal by a quagga. The effect of one mating on the subsequent pregnancy of another mating is explained by JJW using Pangenesis.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  17 Mar 1870
Classmark:  DAR 181: 81
Letter no:  DCP-LETT-7137

To J. J. Weir   17 March [1870]

Summary

CD thinks JJW’s account [in 7137] is significant for a theory of generation and should go to some scientific society; suggests additional data is needed. Quotes cases of subsequent progeny apparently affected by a previous impregnation. Perhaps not prudent to allude to "despised" Pangenesis, which CD fully believes will have its day.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  17 Mar [1870]
Classmark:  American Philosophical Society (Mss.B.D25.)
Letter no:  DCP-LETT-7138

To J. J. Weir   14 June [1870]

Summary

Asks about birds erecting feathers when enraged or frightened. Interested in examples of expression in birds and animals.

Tells of the sheldrake dancing on tidal sands to make worms come out.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  14 June [1870]
Classmark:  Armacost Library, University of Redlands
Letter no:  DCP-LETT-7231

From J. J. Weir   27 June 1870

Summary

On behaviour of birds when frightened and when threatening.

Purple Cytisus grafted onto yellow stock produces some yellow flowers.

Mutations in rabbits.

Cites case of variegated leaf form of one plant apparently spreading to a neighbour.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  27 June 1870
Classmark:  DAR 181: 82
Letter no:  DCP-LETT-7247

To J. J. Weir   29 June [1870]

Summary

On birds erecting feathers.

Comments on production of buds in Cytisus.

Discusses case of rabbit-breeding which affected subsequent progeny of female.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  29 June [1870]
Classmark:  DAR 148: 327
Letter no:  DCP-LETT-7253

From J. J. Weir   4 July 1870

Summary

On mutations in rabbits.

Cytisus case is not a double graft.

Aggressive behaviour of birds of prey.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  4 July 1870
Classmark:  DAR 181: 83
Letter no:  DCP-LETT-7264

To J. J. Weir   16 October 1871

Summary

Cannot accept JJW’s invitation to a party. His health has been worse than usual for some months – can see no one nor can he go anywhere.

Is preparing a cheap edition of the Origin [6th] and will answer Mivart’s objections.

CD is pleased JJW likes C. Wright’s "Darwinism" [see 7940]. Huxley will publish a splendid review of it in Contemporary Review [Nov 1871].

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  16 Oct 1871
Classmark:  Oxford University Museum of Natural History (Hope Entomological Collections 1349)
Letter no:  DCP-LETT-8013

To J. J. Weir   19 October 1871

Summary

"Like you I have often wondered at the different food of the old and young, as with graminivorous birds feeding their young with insects."

Recommends forthcoming book by John Lubbock [Monograph of the Collembola and Thysanura (1873)].

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  19 Oct 1871
Classmark:  DAR 148: 328
Letter no:  DCP-LETT-8018

To J. J. Weir   30 April [1872]

Summary

Not surprised incipient disease in female would make her unattractive to male.

Sorry JJW’s official duties are so heavy.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  30 Apr [1872]
Classmark:  DAR 148: 329
Letter no:  DCP-LETT-8303

From J. J. Weir   31 July 1872

Summary

On variegated leaves; a feature not inherited consistently.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  31 July 1872
Classmark:  DAR 181: 84
Letter no:  DCP-LETT-8440

To J. J. Weir   31 July [1872]

Summary

Thanks for new case.

Not very well.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  31 July [1872]
Classmark:  DAR 148: 330
Letter no:  DCP-LETT-8441

From J. J. Weir   14 August 1872

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Summary

Hostility of birds toward others with same colour;

nuptial plumage.

Spiza cyanea and Spiza ciris.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  14 Aug 1872
Classmark:  DAR 88: 177–8
Letter no:  DCP-LETT-8470

To J. J. Weir   18 September [1873]

Summary

JJW is quite at liberty to use CD’s name as patron of cat show.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  18 Sept [1873]
Classmark:  Boston Medical Library in the Francis A. Countway Library of Medicine (B MS Misc.)
Letter no:  DCP-LETT-8524
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letter (72)
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1868 (37)
1869 (7)
1870 (6)
1871 (2)
1872 (4)
1873 (3)
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