To John Denny 22 July 1872
Summary
Discusses the mutual sterility of some varieties of Pelargonium.
| Author: | Charles Robert Darwin |
| Addressee: | John Denny |
| Date: | 22 July 1872 |
| Classmark: | University of Otago Library, Special Collections (DeB MS 55) |
| Letter no: | DCP-LETT-8423 |
Matches: 5 hits
- … To John Denny 22 July 1872 …
- … Special Collections (DeB MS 55) Charles Robert Darwin Down 22 July 1872 John Denny …
- … See letter from John Denny, 20 July 1872 . There is no evidence that Denny sent a …
- … other cases, see the letter from John Denny, 20 July 1872 and n. 8. See ‘Three forms of …
- … p. 187 ( Collected papers 2: 121). See letter from John Denny, 20 July 1872 and n. 12. …
To John Denny 14 July [1872]
Summary
Discusses JD’s crossing experiments with Pelargonium; notes that his conclusions on male prepotence oppose those of Gärtner. Suggests that his observations on differences in fertility of certain varieties of Pelargonium crossed with certain other varieties be communicated to the Linnean Society.
| Author: | Charles Robert Darwin |
| Addressee: | John Denny |
| Date: | 14 July [1872] |
| Classmark: | DAR 96: 114–15 |
| Letter no: | DCP-LETT-8410 |
Matches: 6 hits
- … DAR 96: 114–15 Charles Robert Darwin Down 14 July [1872] John Denny …
- … To John Denny 14 July [1872] …
- … between this letter and the letter from John Denny, 12 July 1872 . Denny had sent CD the …
- … Denny 1872b (see letter from John Denny, 12 July 1872 and n. 5). CD later cited this …
- … Peltatum elegans . See letter to John Denny, 9 July 1872 and n. 2. In Variation 2: 108, …
- … 1954 , p. 26). See letter from John Denny, 12 July 1872 . For a brief account of the …
From John Denny 20 July 1872
Summary
Thanks CD for his offer to communicate the results of his experiments with Pelargonium to the Linnean Society. Prefers to continue experimenting for at least another season before doing so.
| Author: | John Denny |
| Addressee: | Charles Robert Darwin |
| Date: | 20 July 1872 |
| Classmark: | DAR 162: 160 |
| Letter no: | DCP-LETT-8421 |
Matches: 8 hits
- … From John Denny 20 July 1872 …
- … DAR 162: 160 John Denny Stoke Newington 20 July 1872 Charles Robert Darwin …
- … the Birmingham Horticultural Congress (see letter to John Denny, 9 July 1872 and n. 1). …
- … See letter to John Denny, 14 July [1872] and n. 7. The statement was made in Denny …
- … See letter to John Denny, 14 July [1872] . Denny 1872a was originally …
- … characters (see also letter from John Denny, 12 July 1872 , n. 2). The scarlet section …
- … those of Denny in his letter to John Denny, 14 July [1872] . William Turner Thiselton-Dyer …
- … Ray Society (see also letter to John Denny, 14 July [1872] and n. 5). No translation of …
From John Denny 12 July 1872
Summary
Replies to CD’s queries. Duke of Cornwall Pelargonium is fertile with its own pollen. Has failed to produce hybrids from other varieties besides P. peltatum and P. elegans. Sends numbers of the Florist which contain an account of his mode of procedure ["On cross-breeding pelargoniums" Florist & Pomologist (1872): 10, 34, 50].
Reports a confirmation of his theory of the prepotence of the male parent.
| Author: | John Denny |
| Addressee: | Charles Robert Darwin |
| Date: | 12 July 1872 |
| Classmark: | DAR 162: 159 |
| Letter no: | DCP-LETT-8407 |
Matches: 6 hits
- … From John Denny 12 July 1872 …
- … DAR 162: 159 John Denny Stoke Newington 12 July 1872 Charles Robert Darwin …
- … See letter to John Denny, 9 July 1872 and n. 1. …
- … See letter to John Denny, 9 July 1872 and n. 2. The extensive cross-breeding of …
- … and Gärtner 1849 (see letter to John Denny, 9 July 1872 and n. 6). Denny’s article ‘On …
- … 1872b , p. 50, and the letter to John Denny, 9 July 1872 and n. 2. The communication …
To John Denny 9 July 1872
Summary
Has read JD’s articles in the Gardeners’ Chronicle [(1872): 872, 904–5].
Questions him on the fertility of certain varieties of Pelargonium which are fertile with some varieties but infertile with others.
| Author: | Charles Robert Darwin |
| Addressee: | John Denny |
| Date: | 9 July 1872 |
| Classmark: | University of Otago Library, Special Collections (DeB MS 55) |
| Letter no: | DCP-LETT-8403 |
From William Cooper 21 September 1872
Summary
Requests financial support for horticultural researches, which, he promises, will enormously increase yields.
| Author: | William Cooper |
| Addressee: | Charles Robert Darwin |
| Date: | 21 Sept 1872 |
| Classmark: | DAR 161: 223 |
| Letter no: | DCP-LETT-8530 |
From John Denny 16 August 1879
Summary
JD communicates, after seven years, news of a new "sport" of Pelargonium, sterile both with other varieties and with the mother plant, thus indicating that it is possibly a new species.
| Author: | John Denny |
| Addressee: | Charles Robert Darwin |
| Date: | 16 Aug 1879 |
| Classmark: | DAR 162: 161 |
| Letter no: | DCP-LETT-12195 |
Matches: 3 hits
From M. T. Masters 4 November 1872
Summary
Asks CD’s opinion of John Denny’s idea that males have prepotent transmission power in plants. A. J. F. Wegmann says the females are prepotent.
| Author: | Maxwell Tylden Masters |
| Addressee: | Charles Robert Darwin |
| Date: | 4 Nov 1872 |
| Classmark: | DAR 171: 83 |
| Letter no: | DCP-LETT-8597 |
Denny, John. 1872b. On cross-breeding pelargoniums. Florist and Pomologist (January 1872): 10–12, (February 1872): 34–6, (March 1872): 50–3.
Denny, John. 1872a. The relative influence of parentage in flowering plants. Gardeners’ Chronicle, 29 June 1872, p. 872, 6 July 1872, pp. 904–5.
| letter | (8) |
| bibliography | (3) |
| Darwin, C. R. | (3) |
| Denny, John | (3) |
| Cooper, William | (1) |
| Masters, M. T. | (1) |
| Darwin, C. R. | (5) |
| Denny, John | (3) |
| Darwin, C. R. | (8) |
| Denny, John | (6) |
| Cooper, William | (1) |
| Masters, M. T. | (1) |
