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To J. D. Hooker   18 November [1856]

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Summary

CD encloses letter from Asa Gray, although it is critical of JDH.

Role of struggle in forming species in retreat from advancing glaciers.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  18 Nov [1856]
Classmark:  DAR 114: 183
Letter no:  DCP-LETT-1991

From J. D. Hooker   22 November 1856

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Summary

Continued debate on formation of species as a result of retreat from glaciers.

JDH suggests internal powers of species modification, which he knows CD abhors.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  22 Nov 1856
Classmark:  DAR 100: 111–12
Letter no:  DCP-LETT-1995

To J. D. Hooker   23 November [1856]

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Summary

CD, attempting to clarify debate, states more of his position. External conditions cause "mere variability". Formation of species due to selection. Relation of an organism to its associates far more important than external conditions.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  23 Nov [1856]
Classmark:  DAR 114: 184
Letter no:  DCP-LETT-1997

To J. D. Hooker   1 December [1856]

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Summary

Questions JDH on separation of sexes in trees in New Zealand flora.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  1 Dec [1856]
Classmark:  DAR 114: 185
Letter no:  DCP-LETT-2008

From J. D. Hooker   7 December 1856

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Summary

Has done New Zealand flora calculations. Results support CD’s theory of necessity of crossing. Trees tend to have separate sexes.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  7 Dec 1856
Classmark:  DAR 100: 113–14
Letter no:  DCP-LETT-2014

To J. D. Hooker   10 December [1856]

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Summary

CD is convinced of relation between separation of sexes and tree-habit.

Recent hard blows against crossing theory.

CD long tormented by land molluscs on oceanic islands; found transport possible experimentally.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  10 Dec [1856]
Classmark:  DAR 114: 186
Letter no:  DCP-LETT-2018

To J. D. Hooker   24 December [1856]

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Summary

On the variety of species definitions prevalent among naturalists.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  24 Dec [1856]
Classmark:  DAR 114: 187
Letter no:  DCP-LETT-2022

To J. D. Hooker   15 November [1856]

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Summary

CD finds JDH’s objections to a mundane cold period significant, and he endeavours to show how they do not rule out mutability.

He is writing on crossing.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  15 Nov [1856]
Classmark:  DAR 114: 182
Letter no:  DCP-LETT-1989

From J. D. Hooker   [16 November 1856]

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Summary

JDH not happy with CD’s explanation of the absence of north temperate forms in the Southern Hemisphere, given his explanation for the spread of sub-arctic forms to the south. [CD’s note is in response to JDH’s criticism.]

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [16 Nov 1856]
Classmark:  DAR 100: 162–3
Letter no:  DCP-LETT-1622

To Joseph Dalton Hooker   8 April [1856]

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Summary

Mustering support at Royal Society Council for John Lindley’s Copley Medal. CD thinks Albany Hancock deserves a Royal Medal.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  8 Apr [1856]
Classmark:  DAR 114: 160
Letter no:  DCP-LETT-1851

From J. D. Hooker   7 May 1856

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Summary

Non-endemic Ascension Island plants brought by man, not wind-transported.

Bentham has found intermediates between oxlip and cowslip in Herefordshire.

JDH finds quantity of albumen in seeds is not variable within a species.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  7 May 1856
Classmark:  DAR 100: 94–5
Letter no:  DCP-LETT-1869

To J. D. Hooker   9 May [1856]

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Summary

Lyell urges CD to publish a sketch of species theory; CD asks JDH’s opinion on best course.

Concerned about opposition, particularly by Owen, to Huxley’s admission to Athenaeum.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  9 May [1856]
Classmark:  DAR 114: 161
Letter no:  DCP-LETT-1870

To J. D. Hooker   11 May [1856]

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Summary

CD is unsure about JDH’s recommendation that he publish a separate "Preliminary Essay". It is unphilosophical to publish without full details.

CD will work for Huxley’s admission to Athenaeum.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  11 May [1856]
Classmark:  DAR 114: 162
Letter no:  DCP-LETT-1874

To J. D. Hooker   21 [May 1856]

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Huxley’s "vehement" [Royal Institution?] Lectures make it difficult to propose him for Athenaeum.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  21 [May 1856]
Classmark:  DAR 114: 163
Letter no:  DCP-LETT-1876

To J. D. Hooker   1 June [1856]

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Summary

CD (and Emma) had a good laugh over JDH’s mortified response to a misinterpretation (in print) concerning his position on multiple creation.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  1 June [1856]
Classmark:  DAR 114: 164
Letter no:  DCP-LETT-1885

To J. D. Hooker   17–8 [June 1856]

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Summary

Comments on Huxley–Falconer dispute [see "On the method of palaeontology", Ann. & Mag. Nat. Hist. 18 (1856): 43–54].

Wollaston’s On the variation of species [1856].

Has exploded to Lyell against the extension of continents.

Plants common to Europe and NW. America as result of temperate climate.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  17–18 [June 1856]
Classmark:  DAR 114: 170
Letter no:  DCP-LETT-1904

To J. D. Hooker   22 June [1856]

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CD sends reference for "Laburnum case", with comment on his own credulity.

Wants to quote JDH on plants endemic to NW. America.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  22 June [1856]
Classmark:  DAR 114: 165
Letter no:  DCP-LETT-1908

From J. D. Hooker   [26 June or 3 July 1856]

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Can no longer make out story of NW. American plants; consulting Asa Gray.

Questionable validity of seed-salting experiments.

Aristolochia and Viscum seem to shed pollen before flower opens.

Ray Society should only do translations.

Thomas Thomson in India has rediscovered Aldrovanda, a rare relative of Drosera.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [26 June or 3 July] 1856
Classmark:  DAR 104: 197
Letter no:  DCP-LETT-1911

To J. D. Hooker   5 [July 1856]

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CD cannot swallow continental extensions. Has written to Lyell giving a lengthy criticism of the concept [see 1910] and has asked Lyell to forward the letter to JDH.

Perhaps Aristolochia and Viscum are protandrous.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  5 [July 1856]
Classmark:  DAR 114: 166
Letter no:  DCP-LETT-1918

To J. D. Hooker   5 July [1856]

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Troubled by JDH’s connection between Antarctic island flora and Fuegia, which CD sees as part of a general relation to southern circumpolar flora. Encloses list [not found] of plants from Tristan d’Acunha.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  5 July [1856]
Classmark:  DAR 114: 167
Letter no:  DCP-LETT-1919
Document type
letter (39)
Addressee
Correspondent
Darwin, C. R. (39)
Hooker, J. D.[X]
Date
1856
04 (1)
05 (4)
06 (4)
07 (8)
08 (3)
09 (2)
10 (4)
11 (7)
12 (6)
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