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: | University of Redlands, Armacost Library |
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 |
letter | (6) |
Darwin, C. R. | (3) |
Weir, J. J. | (3) |
Darwin, C. R. | (3) |
Weir, J. J. | (3) |
Darwin, C. R. | (6) |
Weir, J. J. | (6) |