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To Thomas Rivers   7 January [1863]



Thanks for parcel of shoots with several interesting cases of "bud-variation".

Asks for information about roses.

Strange that great changes in peaches are less rare than slight ones and no case seems recorded of new apples or pears or apricots by "bud-variation". "How ignorant we are!"

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  7 Jan [1863]
Classmark:  DAR 185: 81
Letter no:  DCP-LETT-3906

To Thomas Rivers   11 January [1863]



Thanks for "rich and valuable" letter [missing].

Has read TR’s paper in Gardeners’ Chronicle ["Seedling fruits – plums", (1863): 27] – "a treasure to me".

Questions about seedling peaches that approach almonds.

Asks whether TR has ever observed varieties of plants growing close to other varieties for several generations without being affected by crossing.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  11 Jan [1863]
Classmark:  DAR 185: 82
Letter no:  DCP-LETT-3910

To Thomas Rivers   15 January [1863]



Particularly interested in TR’s information about peaches. Accepts offer of double-flowering peach-trees.

Will build a small hothouse for experiments.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  15 Jan [1863]
Classmark:  DAR 185: 83
Letter no:  DCP-LETT-3918

To Thomas Rivers   17 [January 1863]


Can TR distinguish generally, always, or never, a nectarine-tree from a peach-tree before it flowers or before it fruits? He wants to quote TR’s answer.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  17 [Jan 1863]
Classmark:  John Wilson (dealer) (catalogue 61, 21 July 1989, item 50)
Letter no:  DCP-LETT-3922

To Thomas Rivers   25 January [1863]


Has received the two trees sent by TR. Is anxious to see the fruit of the double peach.

The Origin is being sent.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  25 Jan [1863]
Classmark:  Maggs Brothers (catalogue 1086)
Letter no:  DCP-LETT-3942

To Thomas Rivers   1 February [1863]


Answers TR’s query about stomata.

CD will use "weeping trees" as an example of how inexplicable the laws of inheritance are, and asks for facts on character of seedlings.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  1 Feb [1863]
Classmark:  Sotheby’s (dealers) (23–4 July 1987)
Letter no:  DCP-LETT-3962

To Thomas Rivers   [14 February 1863]


Delighted by curious case of inheritance in the weeping ash [cited in missing letter from TR] "which produced weeping seedlings and itself lost the weeping peculiarity!" Wishes he could get authentic information on the weeping elm.

What TR says of seedlings conquering each other well illustrates struggle for existence and natural selection.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  [14 Feb 1863]
Classmark:  19th Century Shop (catalogue 5, 1988)
Letter no:  DCP-LETT-3982

To Thomas Rivers   5 March [1863]


Thanks for information on weeping trees; asks for a few weeping elm seeds.

The double peach is in flower; the almond has not flowered; will beg a specimen of fruit later.

Has been unwell.

Tells of Hooker’s admiration for TR’s articles.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  5 Mar [1863]
Classmark:  Sotheby, London (23–4 July 1987)
Letter no:  DCP-LETT-4023

To Thomas Rivers   [9 May 1863]



Doubts the fruit will stick on his Chinese double peach and asks TR to send him a couple when ripe.

Would like to grow seeds of the "curious monstrosity" of a wall-flower, to see whether the monstrosity is hereditary.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  [9 May 1863]
Classmark:  DAR 185: 84
Letter no:  DCP-LETT-4150

To Thomas Rivers   17 August [1863]



The almond-tree TR gave him produced no fruit, but the Chinese double peach has three. Asks for ripe almond fruits and any odd peaches, to compare the stones.

Asks about modification in fruit or foliage in any fruit-trees from being grafted,

and about seedlings of pears and wheat said to have been found in hedges and woods.

Author:  Charles Robert Darwin
Addressee:  Thomas Rivers
Date:  17 Aug [1863]
Classmark:  DAR 185: 85
Letter no:  DCP-LETT-4270
Document type
Rivers, Thomasdisabled_by_default
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