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To Francis Darwin   12 July [1879]

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Summary

Notes observations on sensitivity and movement of radicles.

Has finished chapter [of Movement in plants] on sleeping plants and is now looking over heliotropism notes.

Is perplexed by Erasmus Darwin; Erasmus [A. Darwin] likes it, but Henrietta thinks it much too long.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  12 July [1879]
Classmark:  DAR 211: 62
Letter no:  DCP-LETT-12152

Matches: 9 hits

From Francis Darwin   [after 16 June 1879]

Summary

Reports on roots and climbing plants experiments he is performing in Sachs’ laboratory. Orchids with air roots have come. Goebel says proshelic better than helic.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  [after 16 June 1879]
Classmark:  DAR 274.1: 53
Letter no:  DCP-LETT-12111F

Matches: 9 hits

  • … to Francis around 16 June 1879 (see letter to Francis Darwin, 16 June [1879] and n. 5). …
  • … a botanist in Sachs’s laboratory (see letter to Francis Darwin, 16 June [1879] and n. 4). …
  • … See letter to Francis Darwin, 16 June [1879] and n. 8. Francis was working in the …
  • … of the apex to Francis (see letter to Francis Darwin, [before 5 June 1879] and nn. 2 and …
  • … mustard ( Sinapis alba ; see also letter to Francis Darwin, 6 and 7 June [1879] and n. …
  • … 5). See letter to Francis Darwin, 16 June [1879] and n. 2. For CD’s description of the …
  • … by the relationship between this letter and the letter to Francis Darwin, 16 June [1879] . …
  • … Ubbadubba was a pet name for Francis’s son, Bernard Darwin . No letter mentioning the boys …
  • letter to Francis Darwin, 16 June [1879] , in which CD mentions Bernard’s head being full of ‘drums, trumpets & soldiers’. On paper soldiers, see Ryan 1995 . The boys were Bernard’s cousins Walter Stewart George Davenport Atkin and Robert Laurence Atkin (Dor and Robert). Their mother, Mary Elizabeth Atkin , had travelled to Switzerland with Elizabeth Darwin on 17 June 1879; they returned to Down on 18 July 1879 ( Emma Darwin’s diary (DAR 242)). Francis

To Francis Darwin   25 June [1879]

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Summary

Suggests experiments to test the response of radicles to light. Considers an alternative term for heliotropism.

Will be curious to have FD’s spiral theory about circumnutation explained to him.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  25 June [1879]
Classmark:  DAR 211: 56
Letter no:  DCP-LETT-12122

Matches: 8 hits

To Francis Darwin   2 July [1879]

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Summary

Stresses importance of ensuring that cauterisation of radicles does not, through injury, prevent movement. Plans an experiment to test for "apheliotropism" in certain radicles.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  2 July [1879]
Classmark:  DAR 211: 60
Letter no:  DCP-LETT-12133

Matches: 6 hits

  • … in the roots of this species (see letter to Francis Darwin, 6 and 7 June [1879] and n. …
  • … 5, and letter from Francis Darwin, [after 16 June 1879] and n. 4). CD was …
  • … one from his silver fir branches (see letter to Francis Darwin, 25 June [1879] and n. 7). …
  • … were still apheliotropic (see letter from Francis Darwin to Emma Darwin, 30 June 1879 ). …
  • … the term ‘Sachs’ curvature’, see the letter to Francis Darwin, 16 June [1879] , n. 8. CD …
  • … of ‘aphelic’ would be ‘aphelism’ (see letter to Francis Darwin, 25 June [ 1879] and n. 6). …

To Francis Darwin   28 June [1879]

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Summary

Discusses the movements of radicles. His observations show that sensitivity to touch resides in the root tip and he believes that sensitivity to gravity governing geotropic responses is also in the root tip. Would much like to convert Julius von Sachs to his ideas on radicle movement.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  28 June [1879]
Classmark:  DAR 211: 59
Letter no:  DCP-LETT-12128

Matches: 6 hits

From Francis Darwin to Emma Darwin   30 June 1879

Summary

Last night had tremendous thunderstorm. Will ask Goebel about proshelismus. Describes experiments on beans. Please send Bessy’s address. Has got to know nice Englishman named Purdy and his wife. Bathes nearly every night with the Finlander.

Author:  Francis Darwin
Addressee:  Emma Wedgwood; Emma Darwin
Date:  30 June 1879
Classmark:  DAR 274.1: 49
Letter no:  DCP-LETT-12128F

Matches: 9 hits

  • … George Davenport Atkin (see letter from Francis Darwin, [after 16 June 1879] and n. 6). …
  • … and away from the sun (see letter to Francis Darwin, 25 June [1879] and n. 6). Karl …
  • … bean) and Vicia (vetch; see letter from Francis Darwin, [before 26 June 1879] ). He was …
  • … on Porliera (a synonym of Porlieria ), see letter to Francis Darwin, 16 June [1879] and n. …
  • … 3. See letter to Francis Darwin, 24 June [1879] . CD had asked Francis to touch a cell (of …
  • … Albert Bernhard Frank , see the letter from Francis Darwin, 29 May 1879 . Elizabeth Darwin …
  • … in Sachs’s laboratory (see letter from Francis Darwin, [after 2 June 1879] and n. 3). …
  • letter from G. H. Darwin, 24 June 1879 and nn. 2 and 3). Ubbadubba was a pet name for Francis’ …
  • Francis and his brother George Howard Darwin visited Norway in August 1866 ( Emma Darwin’s diary (DAR 242)). The American has not been identified. ‘Axles’ was evidently a family word used to refer to unresolved work-related issues (see also Correspondence vol. 26, letter

To Francis Darwin   2 June [1879]

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Summary

Thanks for FD’s letter describing microscopic work under experienced supervision.

Is glad to hear of C. E. Stahl’s objection to treating plants as mere machines.

Pleased that J. von Sachs has yielded on growth.

Perhaps Stahl will recognise whether the case of the silver fir is the same as that referred to in the German account [see 12074b].

CD has finished the first draft of his essay on Erasmus Darwin’s life and is "heartily sick of the job".

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  2 June [1879]
Classmark:  DAR 271.4: 15
Letter no:  DCP-LETT-12078A

Matches: 5 hits

From Francis Darwin   4 July 1879

Summary

Heliotropism nomenclature. Apheliotropic mustard roots grow more quickly in dark. Measures growth with microscope as S. H. Vines did in mould. Studying air roots.

FD’s and Stahl’s negative opinion of Sachs.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  4 July 1879
Classmark:  DAR 209.3: 334
Letter no:  DCP-LETT-12134

Matches: 5 hits

To G. H. Darwin   7 [July 1879]

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Summary

Francis wants a copy of a book on "Shakespeare’s merry tales" to present to a friend in Würzburg.

Author:  Charles Robert Darwin
Addressee:  George Howard Darwin
Date:  7 [July 1879]
Classmark:  DAR 210.1: 85
Letter no:  DCP-LETT-12135

Matches: 2 hits

From Francis Darwin   [6 July 1879]

Summary

Describes bean experiments. Will tell Emma Darwin to tell Elizabeth Darwin that he has written to the Riffel.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  [6 July 1879]
Classmark:  DAR 274.1: 61
Letter no:  DCP-LETT-12296F

Matches: 5 hits

  • … See letter to Francis Darwin, 4 July [1879] . Francis performed experiments to determine …
  • … 2 July [1879] and n. 2. See letter from Francis Darwin, 4 July 1879 and nn. 3 and 6. …
  • … genus of spider plants) have aerial roots. See letter to Francis Darwin, 4 July [1879] . …
  • letter of 4 July [1879] , CD had mentioned he had forgotten which species he and Francis had already tested. See second letter to Francis Darwin, …
  • Francis’s son. The Riffelhaus, a hotel built in 1853, is near Zermatt in the Swiss Alps. Elizabeth Darwin was on holiday in Switzerland with Mary Elizabeth Atkin ; they arrived at the hotel around 10 July 1879 (letter

To Francis Darwin   2 July [1879]

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Summary

FD’s experiment shows that caustic does not interfere with the bending of radicles. Believes that the apex is a kind of brain for certain movements, being specialised to receive certain irritations.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  2 July [1879]
Classmark:  DAR 211: 61
Letter no:  DCP-LETT-12132

Matches: 3 hits

From Francis Darwin   [after 2 June 1879]

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Summary

Geotropism.

Experimenting on Porlieria in damp and dry earth.

Hermann Müller has been ridiculed for teaching children "in the beginning was Carbon".

Will ask about Ernst Krause.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  [after 2 June 1879]
Classmark:  DAR 209.5: 230–2
Letter no:  DCP-LETT-12075

Matches: 5 hits

To Francis Darwin   4 July [1879]

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Summary

CD gives suggestions concerning FD’s experiments on the radicles of roots. Asks him to find out whether J. von Sachs tried beans. Should also try other gramineous plants.

Bernard looking forward to his father’s return.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  4 July [1879]
Classmark:  DAR 271.4: 16
Letter no:  DCP-LETT-12134A

Matches: 3 hits

To Francis Darwin   [26 June 1879]

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Summary

Believes that the response of root tips to being "blinded" with foil is much more interesting than response to cauterisation.

Author:  Charles Robert Darwin
Addressee:  Francis Darwin
Date:  [26 June 1879]
Classmark:  DAR 211: 58
Letter no:  DCP-LETT-12124

Matches: 3 hits

From J. R. Atkin   7 August [1879]

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Summary

Thanks for present and letter.

Wishes a good trip to the lakes and sends love to family members.

Author:  James Richard (Dick) Atkin, Baron Atkin
Addressee:  Charles Robert Darwin
Date:  7 Aug [1879]
Classmark:  DAR 159: 122
Letter no:  DCP-LETT-12185

Matches: 2 hits

  • … and Robert Laurence Atkin , had stayed at Down (see letter from Francis Darwin, [after 16 …
  • … June 1879] , and letter to Francis Darwin, 24 June [1879] ). Francis Darwin’s son, Bernard …

From Francis Darwin   9 July 1879

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Summary

Pressure paralyses the streaming of protoplasm in the hairs of Tradescantia.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  9 July 1879
Classmark:  DAR 162: 61
Letter no:  DCP-LETT-12142

Matches: 3 hits

  • … been suggested by Julius Sachs (see letter from Francis Darwin, [before 26 June 1879] ). …
  • … 1879] and n. 4). See second letter to Francis Darwin, 2 July [1879] . Francis’s results …
  • … 1875 and nn. 3 and 7). In the letter to Francis Darwin, 24 June [1879], CD had suggested …

From Francis Darwin   [before 26 June 1879]

Summary

Discusses results of geotropism experiment. Has started some heliotropic caustic experiments on mustard roots. Has trouble making marks.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  [before 26 June 1879]
Classmark:  DAR 274.1: 55
Letter no:  DCP-LETT-12126F

Matches: 5 hits

From Reginald Darwin   18 April 1879

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Summary

Thanks CD for sending some old family letters of RD’s father’s [Francis Sacheverel Darwin (1786–1859)].

Author:  Reginald Darwin
Addressee:  Charles Robert Darwin
Date:  18 Apr 1879
Classmark:  DAR 99: 154–5
Letter no:  DCP-LETT-11987

Matches: 4 hits

  • … sending some old family letters of RD’s father’s [Francis Sacheverel Darwin (1786–1859)]. …
  • … April 1879 and n. 1. CD had given Reginald some letters from Francis Sacherevel Darwin to …
  • Francis’s guardian (note at the end of Erasmus Darwin’s Commonplace book (Down House MS)). The letters
  • … Robert Waring Darwin (1766–1848). These letters have not been found. Francis had taken a …

From Francis Darwin   [before 31 July 1879]

Summary

Discusses Müller-Thurgau’s work on heliotropism. Will start on Thursday for Heidelberg and Strassburg.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  [before 31 July 1879]
Classmark:  DAR 274.1: 56
Letter no:  DCP-LETT-12177F

Matches: 5 hits

  • … 1880 ) appeared in 1880. See letter from Francis Darwin, 4 July 1879 and n. 7. In his …
  • … negative view of Wiesner’s work, see the letter from Francis Darwin, 29 May 1879 and n. 8. …
  • … to grow horizontally (see letter from Francis Darwin, [after 2 June 1879] and n. 3). The …
  • … in Würzburg (see letter from Francis Darwin, 4 July 1879 ). Francis’s paper ‘Über das …
  • Francis’s son, Bernard Darwin . The Darwins stayed at Coniston in the Lake District from 2 to 27 August 1879 ( Emma Darwin’s diary (DAR 242)). The ‘French life’ is probably a reference to the biography of Erasmus Darwin published in Biographie médicale (see letter

From Francis Darwin   [c. 25 February 1879]

Summary

Directs CD where to find tools in his room. Has been looking at agave and aloe flowers. Thanks family for their letters.

Author:  Francis Darwin
Addressee:  Charles Robert Darwin
Date:  [c. 25 Feb 1879]
Classmark:  DAR 274.1: 60
Letter no:  DCP-LETT-11883F

Matches: 4 hits

  • … testimonial; see n. 9, below. See letter to Francis Darwin, [before 25 February 1879] and …
  • … see Correspondence vol. 26, letter from Francis Darwin, 24 and 25 July 1878 ); Francis …
  • … had provided him with seeds; see letter to Francis Darwin, [4 February – 8 March 1879] and …
  • Francis had gone to rest and visit George Howard Darwin in Algiers; see letter to W. T. …
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