To John Scott 19 December [1862]
Summary
JS should be proud of his paper ["Nature of the fern-spore", Edinburgh New. Philos. J. 2d ser. 16 (1862): 209–27].
CD has just found that JS’s observations on the confluence of two sexes causing variability were independently confirmed by Huxley.
CD has always suspected a fundamental difference between buds and ovules.
Asks for examples of "bud-variation" or "sports".
Asks JS to test germination of pollen on rostellum of Laelia.
Offers JS money for experimental supplies, e.g., netting, to keep insects out of flowers.
Encloses an outline of crossing experiments with Lythraceae, Primula, Pelargonium, and others, which he feels would be valuable.
Note on melastomids.
Author: | Charles Robert Darwin |
Addressee: | John Scott |
Date: | 19 Dec [1862] |
Classmark: | DAR 93: B35–6, B64–5, B80 |
Letter no: | DCP-LETT-3868 |
Matches: 7 hits
- … out of flowers. Encloses an outline of crossing experiments with Lythraceae, Primula , …
- … to the possibility of Scott repeating a series of crossing experiments on varieties of the …
- … DAR 76: 40, there are dated notes from CD’s crossing experiments with cabbages in May and …
- … fertilisation , pp. 98–103. CD refers to the crossing experiments, begun in May 1862, …
- … 4–9, 12–13. In Variation 2: 70, CD described crossing experiments on peloric flowers of …
- … In the summer of 1862, CD made extensive crossing experiments with the trimorphic plant, …
- … in DAR 205.8: 45–7, 49–53, 56. He began crossing experiments on Monochaetum ensiferum in …
To John Scott 3 December [1862]
Summary
JS’s facts on Primula are new to CD.
In Linum CD has also found dimorphic and non-dimorphic species.
Plans to publish next autumn on successive homomorphic generations in Primula.
"Fluctuating forms" due to culture.
Urges JS to publish.
Lobelia functionally monoecious.
Where did JS publish on Clivia hybrids? Did he count parent and cross seeds, as Gärtner shows is necessary?
CD has done large experiments on artificially fertilised cowslips. They never resemble oxlips.
Would welcome detailed criticism of natural selection by a careful observer like JS. Most criticism worthless. Expects a great deal from Lyell’s reaction.
Suggests JS do orchid experiment to see if rostellum can be penetrated by pollen.
Author: | Charles Robert Darwin |
Addressee: | John Scott |
Date: | 3 Dec [1862] |
Classmark: | DAR 93: B60–3 |
Letter no: | DCP-LETT-3844 |
Matches: 4 hits
- … are in DAR 108: 56–66. CD carried out crossing experiments with Primula sinensis in 1861 ( …
- … in Origin , p. 98. Scott mentioned some crossing experiments that he had carried out with …
- … in Primula ’ , p. 442. CD began his crossing experiments with cowslips and primroses in …
- … 27 April 1862, in DAR 157a, pp. 75–7. CD’s crossing experiments with oxlips, carried out …
From John Scott 21 September [1863]
Summary
Sends Primula MS, which CD has promised to communicate to Linnean Society [see 4213].
Will soon send results on peloric Antirrhinum.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 21 Sept [1863] |
Classmark: | DAR 177: 96 |
Letter no: | DCP-LETT-4301 |
From John Scott 7 January [1864]
Summary
Has finished correcting Primula paper [see 4332].
Has presented paper on monoecious spikes of maize [Edinburgh New Philos. J. 2d ser. 19 (1864): 213–20].
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 7 Jan [1864] |
Classmark: | DAR 177: 98, 99 f.3; Edinburgh Courant, 19 December 1863, p. 8. |
Letter no: | DCP-LETT-4382 |
Matches: 4 hits
- … throughout 1863 on their respective crossing experiments. In September 1863 Scott sent CD …
- … 103–4, included CD’s experimental results of crossing primroses ( Primula vulgaris ) and …
- … P. veris ). Scott’s own attempts at crossing primroses and cowslips had failed, but CD …
- … of fertility and sterility when crossing several distinct species of Verbascum (see …
From John Scott [20 November – 2 December 1862]
Summary
JS does not fully accept natural selection.
Has never raised oxlips from cowslips or primroses; reports of such must be cases of crossing.
Discusses relative fertility of varieties, self-fertility of hybrids, and plans for experiments on enhanced hybrid fertility.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | [20 Nov – 2 Dec 1862] |
Classmark: | DAR 177: 79 |
Letter no: | DCP-LETT-3815 |
From John Scott 16 May [1864]
Summary
Thanks for communicating Oncidium sterility paper [see 4485] to Linnean Society.
Surprised that CD’s seedlings of non-dimorphic cowslip breed true.
Surprised also that the red primrose he sent reverts to wild form. He had reasoned from red’s infertility with yellow that it was an established variety. Tries to correlate inheritance of colour and sterility between varieties.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 16 May [1864] |
Classmark: | DAR 177: 106 |
Letter no: | DCP-LETT-4498 |
To John Scott 16 February [1863]
Summary
Tells JS Acropera capsule should be left to grow.
JS was correct on "bud-variation" in fern frond.
Does not believe Primula structure necessarily related to dioecism, but the difference in fertility of the two forms forced him to admit the possibility.
Author: | Charles Robert Darwin |
Addressee: | John Scott |
Date: | 16 Feb [1863] |
Classmark: | DAR 93: B55, B81–2 |
Letter no: | DCP-LETT-3991 |
From John Scott 28 March 1864
Summary
Surprised at CD’s account of Bryanthus.
H. Crüger’s approach to Gongora fertilisation is beset with difficulties.
Reports his work on self-sterility of Oncidium.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 28 Mar 1864 |
Classmark: | DAR 177: 103 |
Letter no: | DCP-LETT-4438 |
From John Scott 24 February 1877
Summary
Thanks for Cross and self-fertilisation.
His work on poppy varieties confirms increased vigour with crossing.
JS is carrying out opium poppy experiments CD suggested. He is busy with opium duties. Observing many fields of poppies, day and night, JS finds them remarkably free of insects. Believes they are wind-pollinated and that varieties have prepotent pollen since he has shown they do not cross naturally.
Plans to send a paper on Cyclosis to Linnean Society.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 24 Feb 1877 |
Classmark: | DAR 177: 122 |
Letter no: | DCP-LETT-10864 |
To John Scott 1 and 3 August [1863]
Summary
Thanks JS for orchid paper [Trans. Bot. Soc. Edinburgh 7 (1863): 543–50]. JS presents excellent new facts on sterility of orchids.
His argument that coloured primroses are not hybrids is good, as is idea of discovering primrose parentage by breeding for colours.
Author: | Charles Robert Darwin |
Addressee: | John Scott |
Date: | 1 and 3 Aug 1863 |
Classmark: | DAR 93: B24, B27–8, B70; DAR 147: 455 |
Letter no: | DCP-LETT-4260 |
From John Scott 23 July [1863]
Summary
Discusses heterostyly in Hottonia.
Criticises L. C. Treviranus’ statements on Primula longiflora’s having short-styled form.
Describes his results with crossing different coloured primroses. Will let CD, when he reads his paper, decide whether his finding white and red varieties perfectly sterile when crossed, yet fertile inter se, ought to be published.
Difficulty in getting his orchid paper published in Edinburgh New Philosophical Journal.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 23 July [1863] |
Classmark: | DAR 177: 95 |
Letter no: | DCP-LETT-4252 |
To John Scott 31 May [1863]
Summary
Thanks JS for abstract of orchid sterility paper from Edinburgh Courant. His case of individual sterility will be of highest use to CD. Criticises JS’s writing. Points out weaknesses in the organisation of his argument and the use of inflated, imprecise language.
Author: | Charles Robert Darwin |
Addressee: | John Scott |
Date: | 31 May [1863] |
Classmark: | DAR 93: B47–8 |
Letter no: | DCP-LETT-4197 |
To John Scott 8 January [1863]
Summary
CD’s respect for JS’s indomitable work and interesting experiments increases steadily.
His gratitude for the primulas and the astonishing Gongora specimen.
Asks JS’s opinion about crossing a primrose with the pollen of a wild cowslip and of a cultivated polyanthus.
Author: | Charles Robert Darwin |
Addressee: | John Scott |
Date: | 8 Jan [1863] |
Classmark: | Transactions of the Hawick Archæological Society (1908): 67 |
Letter no: | DCP-LETT-3908F |
Matches: 1 hit
- … Gongora specimen. Asks JS’s opinion about crossing a primrose with the pollen of a wild …
From John Scott 3 March 1863
Summary
JS criticises natural selection as based on an innate "continuously watchful selective principle".
Seeks seed of wild Rocky Mountain maize.
What is CD’s view on origin of maize?
Seeks information on self-sterility of Passiflora and Lobelia.
Weeping habit of trees.
Intended to say bisexual plants presented more established varieties than unisexual, not that they are more variable.
Explains his opinion that homomorphically fertilised Primula will produce only their own form. Is trying homomorphic crosses with different coloured Primula varieties.
Asks to read Asa Gray’s 2d review of Orchids.
Has finally successfully fertilised Gongora, but it was done by unnatural means.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 3 Mar 1863 |
Classmark: | DAR 108: 179 |
Letter no: | DCP-LETT-4021 |
From John Scott 10 June [1864]
Summary
Sends Passiflora paper [see 4485].
Sends seeds of peloric Antirrhinum crossed by normal form and sends results of his experiments [table of crosses].
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 10 June [1864] |
Classmark: | DAR 51: B22; DAR 177: 109 |
Letter no: | DCP-LETT-4526 |
From John Scott 12 April 1877
Summary
Comments on various species of Lagerstroemia.
In the series of opium poppy intercrosses made at CD’s suggestion, JS has learned that the reason they failed to intercross was the absence of insects at the period of their flowering.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 12 Apr 1877 |
Classmark: | DAR 47: 207–9 |
Letter no: | DCP-LETT-10928 |
To John Scott 11 December [1862]
Summary
Criticises style of JS’s fern paper [Edinburgh New Philos. J. 2d ser. 16 (1862): 209–27].
JS’s remark on "the two sexes counteracting variability in the product of the one" is new to CD.
Does the female [fern?] plant always produce female by parthenogenesis?
They seem to work on same subjects; CD has much material on Drosera.
Does not understand JS’s objections to natural selection.
Offers to suggest experiments.
Author: | Charles Robert Darwin |
Addressee: | John Scott |
Date: | 11 Dec [1862] |
Classmark: | DAR 93: B37, B49–52 |
Letter no: | DCP-LETT-3853 |
From John Scott [1–11] April [1863]
Summary
Studying self-sterility, particularly in Oncidium, where abortion occurs consistently but stigma functions normally. His hybrid orchid crosses show sterility occurs capriciously. Thus it is not a "special endowment".
Disputes Asa Gray’s and Hermann Crüger’s view of rostellar germination.
Doubts absolute sterility of Catasetum.
Disappointed by results with homomorphic cowslips.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | [1–11] Apr [1863] |
Classmark: | DAR 108: 183, DAR 177: 86 (fragile) |
Letter no: | DCP-LETT-4073 |
From John Scott 17 December [1862]
Summary
Thanks for Journal of researches and Origin.
Thanks CD for comments on his fern paper [see 3847 and 3853]; has great difficulty in expressing his ideas.
Discusses inheritance and variation.
Asks CD for an account of the experiments he would like JS to perform.
Author: | John Scott |
Addressee: | Charles Robert Darwin |
Date: | 17 Dec [1862] |
Classmark: | DAR 177: 80 |
Letter no: | DCP-LETT-3865 |
Matches: 1 hit
- … 20). Scott repeated a number of Gärtner’s crossing experiments with Verbascum in 1863 (see …
From Emma Darwin to John Scott 19 November [1863]
Author: | Emma Wedgwood; Emma Darwin |
Addressee: | John Scott |
Date: | 19 Nov [1863] |
Classmark: | DAR 93: B31 |
Letter no: | DCP-LETT-4343 |
letter | (35) |
Scott, John | (18) |
Darwin, C. R. | (16) |
Darwin, Emma | (1) |
Wedgwood, Emma | (1) |
Darwin, C. R. | (18) |
Scott, John | (17) |
Scott, John | |
Darwin, C. R. | (34) |
Darwin, Emma | (1) |
Wedgwood, Emma | (1) |
Darwin's 1876 letters online
Summary
Birth, tragic death . . . and cardigan jackets. To mark the 211th anniversary of Darwin's birth, we have released online the transcripts and footnotes of over 460 letters written to and from him in 1876 and a supplement of 180 letters written before…
Matches: 1 hits
- … I am now getting ready a book on the advantages of crossing, which will be a sort of complement to …
Darwin in letters, 1864: Failing health
Summary
On receiving a photograph from Charles Darwin, the American botanist Asa Gray wrote on 11 July 1864: ‘the venerable beard gives the look of your having suffered, and … of having grown older’. Because of poor health, Because of poor health, Darwin…
Matches: 6 hits
- … him to carry out tasks like counting seeds of Lythrum , crossing cowslips with polyanthuses, and …
- … a full conviction of the change of species is.’ Crossing experiments In addition to …
- … Continuing from these earlier studies, in 1864 he conducted crossing experiments between different …
- … other papers of Scott’s followed, reporting the results of crossing experiments on different species …
- … years, Darwin consulted Charles William Crocker about his crossing experiments with hollyhocks, and …
- … and Friedrich Hildebrand in Germany compared results of crossing experiments with a Pulmonaria …
Cross and self fertilisation
Summary
The effects of cross and self fertilisation in the vegetable kingdom, published on 10 November 1876, was the result of a decade-long project to provide evidence for Darwin’s belief that ‘‘Nature thus tells us, in the most emphatic manner, that she abhors…
Matches: 9 hits
- … to James Moggridge to ask him to observe whether spontaneous crossing of different varieties of this …
- … I got fresh plants, & consequently took up the effect of crossing & self-fertilising plants …
- … in Florence kept varieties of sweet peas separated to avoid crossing ( From Federico Delpino, 18 …
- … native Mediterranean setting. Although he continued his crossing experiments through the early …
- … what great vigour is given to seedling plants by the crossing of their parents’ ( To Fritz Müller, …
- … & have strength to complete it) will be on the advantages of Crossing Plants, & this will …
- … Meehan had been a vocal opponent of Darwin’s views on crossing, and his paper, ‘Are insects any …
- … press observations continued for 10 years on the effects of crossing plants, & I think that …
- … inferred from observations on self fertilising plants that crossing was of little importance …
Forms of flowers
Summary
Darwin’s book The different forms of flowers on plants of the same species, published in 1877, investigated the structural differences in the sexual organs of flowers of the same species. It drew on and expanded five articles Darwin had published on the…
Matches: 5 hits
- … whether hybrid sterility was the inevitable result of crossing species. Thomas Huxley had stated …
- … stigmas ’. Darwin had hoped to publish the results of the crossing experiments immediately, but by …
- … 1863, when Lythrum was flowering, Darwin resumed his crossing experiments. He also wrote to …
- … of the various crosses. For this, he turned to his earlier crossing experiments, which included some …
- … adding this work to his book on ‘the good effects of crossing’ ( Cross and self fertilisation ), …
Orchids
Summary
Why Orchids? Darwin wrote in his Autobiography, ‘During the summer of 1839, and, I believe, during the previous summer, I was led to attend to the cross-fertilisation of flowers by the aid of insects, from having come to the conclusion in my…
Matches: 1 hits
- … conclusion in my speculations on the origin of species, that crossing played an important part in …
1877 letters now online
Summary
Flowers, bloom, a son married . . . and a suspended monkey in Cambridge at Darwin's honorary LLD ceremony. The transcripts and footnotes of over 600 letters written to and from Darwin in 1877 are now online. Read more about Darwin's life in 1877…
Darwin in letters, 1877: Flowers and honours
Summary
Ever since the publication of Expression, Darwin’s research had centred firmly on botany. The year 1877 was no exception. The spring and early summer were spent completing Forms of flowers, his fifth book on a botanical topic. He then turned to the…
Matches: 3 hits
- … was only one of many adaptations that had evolved to promote crossing between individuals of the …
- … males and females of unisexual animals. Through extensive crossing experiments, and painstaking …
- … a number of other structures and behaviours that facilitated crossing, especially with the aid of …
Darwin in letters, 1876: In the midst of life
Summary
1876 was the year in which the Darwins became grandparents for the first time. And tragically lost their daughter-in-law, Amy, who died just days after her son's birth. All the letters from 1876 are now published in volume 24 of The Correspondence…
Matches: 4 hits
- … the text. Orchids , which concentrated on the ‘means of crossing’, was seen by Darwin as the …
- … , which provided evidence for the ‘advantages of crossing’ (letter to Asa Gray, 28 January 1876). …
- … before a disease-free variety of potato had been produced by crossing the most pest-free varieties …
- … self-fertilisation To demonstrate the advantages of crossing, Darwin presented the results …
Survival of the fittest: the trouble with terminology Part II
Summary
The most forceful and persistent critic of the term ‘natural selection’ was the co-discoverer of the process itself, Alfred Russel Wallace. Wallace seized on Herbert Spencer’s term ‘survival of the fittest’, explicitly introduced as an alternative way of…
Matches: 1 hits
- … his own copy of the first edition of Origin neatly crossing through every occurrence of ‘natural …
Dates of composition of Darwin's manuscript on species
Summary
Many of the dates of letters in 1856 and 1857 were based on or confirmed by reference to Darwin’s manuscript on species (DAR 8--15.1, inclusive; transcribed and published as Natural selection). This manuscript, begun in May 1856, was nearly completed by…
Matches: 1 hits
- … On the possibility of all organic beings occasionally crossing, & on the remarkable …
Floral Dimorphism
Summary
Sources|Discussion Questions|Experiment Floral studies In 1877 Darwin published a book that included a series of smaller studies on botanical subjects. Titled The different forms of flowers on plants of the same species, it consisted primarily of…
Matches: 1 hits
- … out of the meaning of heterostyled flowers. The results of crossing such flowers in an illegitimate …
New material added to the American edition of Origin
Summary
A ‘revised and augmented’ American edition of Origin came on the market in July 1860, and was the only authorised edition available in the US until 1873. It incorporated many of the changes Darwin made to the second English edition, but still contained…
Matches: 1 hits
- … to the action of external conditions, something to the crossing of already existing forms, and much …
Darwin in letters, 1867: A civilised dispute
Summary
Charles Darwin’s major achievement in 1867 was the completion of his large work, The variation of animals and plants under domestication (Variation). The importance of Darwin’s network of correspondents becomes vividly apparent in his work on expression in…
Matches: 3 hits
- … or the Principles of Variation, Inheritance, Reversion, Crossing, Interbreeding, and Selection under …
- … on dimorphism and trimorphism and reported on a series of crossing experiments with orchids. Darwin …
- … [1867] ). Darwin was also interested in experiments crossing different species of orchids …
Darwin and Down
Summary
Charles and Emma Darwin, with their first two children, settled at Down House in the village of Down (later ‘Downe’) in Kent, as a young family in 1842. The house came with eighteen acres of land, and a fifteen acre meadow. The village combined the…
Matches: 1 hits
- … to study fertilisation (in particular the effects of crossing and of self-fertilisation); …
Darwin in letters, 1863: Quarrels at home, honours abroad
Summary
At the start of 1863, Charles Darwin was actively working on the manuscript of The variation of animals and plants under domestication, anticipating with excitement the construction of a hothouse to accommodate his increasingly varied botanical experiments…
Matches: 5 hits
- … Correspondence vol. 10, Appendix VI). In addition to crossing varieties of Primula in 1863, he …
- … the two men discussed a multitude of botanical subjects, the crossing experiments that Scott had …
- … and he continued to observe individuals of the same species crossing with one another in a variety …
- … particularly when he was working on the chapter he called ‘Crossing & Sterility’ (see …
- … discussions, completing three sections, on inheritance, crossing and sterility, and selection, by …
Darwin on childhood
Summary
On his engagement to his cousin, Emma Wedgwood, in 1838, Darwin wrote down his recollections of his early childhood. Life. Written August–– 1838 My earliest recollection, the date of which I can approximately tell, and which must have been before…
Matches: 1 hits
- … effect, on my memory.–– I remember, when going there crossing in the carriage a broad ford, & …
Darwin in letters, 1862: A multiplicity of experiments
Summary
1862 was a particularly productive year for Darwin. This was not only the case in his published output (two botanical papers and a book on the pollination mechanisms of orchids), but more particularly in the extent and breadth of the botanical experiments…
Fake Darwin: myths and misconceptions
Summary
Many myths have persisted about Darwin's life and work. Here are a few of the more pervasive ones, with full debunking below...
Matches: 1 hits
- … Many myths have persisted about Darwin's life and work. Here are a few of the more pervasive ones, …
Origin is 160; Darwin's 1875 letters now online
Summary
To mark the 160th anniversary of the publication of Origin of species, the full transcripts and footnotes of nearly 650 letters to and from Charles Darwin in 1875 are published online for the first time. You can read about Darwin's life in 1875…
Matches: 1 hits
- … fertilisation , summing up many years of experiments on crossing plants. I wd gladly …
Darwin’s earthquakes
Summary
Darwin experienced his first earthquake in 1834, but it was a few months later that he was really confronted with their power. Travelling north along the coast of Chile, Darwin and Robert FitzRoy, captain of HMS Beagle, were confronted with a series of…
Matches: 1 hits
- … he collected. Travelling on from South America and crossing back half way round the world, …