To Roland Trimen 31 January [1863]
Summary
Thanks RT for his letter and MS.
Is astonished by the different forms of orchids he describes.
Urges RT to describe and experiment with two or three of the more distinct genera.
"I believe, or am inclined to believe in one or very few primordial forms, from community of structure and early embryonic resemblances in each great class."
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 31 Jan [1863] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 78) |
Letter no: | DCP-LETT-3956 |
To Roland Trimen 16 February [1863]
Summary
Further discusses RT’s observations on Cape [of Good Hope] orchids and asks whether it would be possible for him to send some specimens to Kew.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 16 Feb [1863] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 55) |
Letter no: | DCP-LETT-3988 |
To Roland Trimen 23 May [1863]
Summary
CD has drawn up a paper from RT’s orchid notes on the fertilisation of Disa grandiflora for the Linnean Society [J. Linn. Soc. Lond. (Bot.) 7 (1863): 144–7].
CD would welcome seeds of any Cape Oxalis for his investigation of dimorphism.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 23 May [1863] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 56) |
Letter no: | DCP-LETT-4179 |
To Roland Trimen 27 August [1863]
Summary
Discusses methods of pollination in orchids.
Thinks RT should investigate Physianthus to see if it requires insect aid for fertilisation as the Asclepiadaceae do.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 27 Aug [1863] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 57) |
Letter no: | DCP-LETT-4279 |
To Roland Trimen 25 November [1863]
Summary
CD’s doctor [J. M. Gully] has ordered him to do nothing for six months.
Thanks RT for orchid specimen.
Dares not look at Oxalis flowers.
Regrets RT cannot get seed, especially from his trimorphic flowers.
Asks for bulbs of two or three forms.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 25 Nov [1863] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 58) |
Letter no: | DCP-LETT-4347 |
To Roland Trimen 13 May 1864
Summary
Oxalis plants have arrived safely [see 4347].
CD regrets his mistake about Disa; will correct it.
Thanks RT for his additional facts about Disa.
Is recovering slowly from ten months’ illness.
Asks whether Strelitzia reginae grows in gardens at the Cape. Suspects it must be fertilised by a bird.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 13 May 1864 |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 59) |
Letter no: | DCP-LETT-4493 |
To Roland Trimen 25 November 1864
Summary
Has forwarded RT’s paper on Bonatea to the Linnean Society [J. Linn. Soc. Lond. (Bot.) 9 (1865): 156–60].
The Oxalis sent by RT flowered but CD has made out only two forms; he thinks there ought to be three, so would welcome more seed.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 25 Nov 1864 |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 60) |
Letter no: | DCP-LETT-4680 |
To Roland Trimen 24 December [1867]
Summary
Invites RT to come to Down for a week-end.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 24 Dec [1867] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 61) |
Letter no: | DCP-LETT-5739 |
To Roland Trimen 2 January [1868]
Summary
CD seeks information on the variation of ocelli within species of butterflies.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 2 Jan [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 62) |
Letter no: | DCP-LETT-5772 |
To Roland Trimen 16 January [1868]
Summary
Thanks RT for drawings of ocelli, especially for the description of ocelli of S. African Saturniidae. Would like to know of any cases in which the ocelli are confined to the male, to illustrate better the case of the peacock.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 16 Jan [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 63) |
Letter no: | DCP-LETT-5790 |
To Roland Trimen 12 February [1868]
Summary
Is interested in the relative numbers of males and females of all animals; wants any instances of males, or females, being in excess.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 12 Feb [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 64) |
Letter no: | DCP-LETT-5867 |
To Roland Trimen 21 February [1868]
Summary
RT’s argument about the Lasiocampa strikes him as very good; asks for any similar cases. Wonders whether male butterflies may serve more than one female.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 21 Feb [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 65) |
Letter no: | DCP-LETT-5908 |
To Roland Trimen [16 March 1868]
Summary
Asks whether RT will call.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | [16 Mar 1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 66) |
Letter no: | DCP-LETT-6015 |
To Roland Trimen [21 March 1868]
Summary
Arranges for RT to call.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | [21 Mar 1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 67) |
Letter no: | DCP-LETT-6035 |
To Roland Trimen 27 March [1868]
Summary
Thanks RT for letter which saves him from a "terrible mistake": that no moths were more brilliantly coloured beneath than above. Suggests revised version for comment. [See Descent 1: 397.]
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 27 Mar [1868] |
Classmark: | DAR 82: A119–20 |
Letter no: | DCP-LETT-6060 |
To Roland Trimen 14 April [1868]
Summary
Has tried using dealers’ price-lists as a guide to sex ratios in Lepidoptera; finds numerous cases in which the sexes bring different prices and in virtually all of them the males are cheaper. This seems to confirm the impression of the field collectors.
Wishes RT good luck with natural history in S. Africa.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 14 Apr [1868] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 68) |
Letter no: | DCP-LETT-6117 |
To Roland Trimen 24 May [1871]
Summary
Cannot explain why moths fly into candle flames and birds against lighthouses. Has felt it was just curiosity which attracted them.
CD does believe dogs have some sense of humour.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 24 May [1871] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 69) |
Letter no: | DCP-LETT-7880 |
To Roland Trimen 27 July 1871
Summary
Invites RT to call on him while he is staying at Haredene.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 27 July 1871 |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 70) |
Letter no: | DCP-LETT-7884 |
To Roland Trimen 13 November [1871]
Summary
Regrets he is too unwell to see RT before his departure for the Cape; wishes him well.
Author: | Charles Robert Darwin |
Addressee: | Roland Trimen |
Date: | 13 Nov [1871] |
Classmark: | Royal Entomological Society (Trimen papers, box 21: 72) |
Letter no: | DCP-LETT-8064 |