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From Hewett Cottrell Watson to Joseph Dalton Hooker   1 January 186[8]

Summary

HCW’s criticisms of CD’s theory.

Author:  Watson, H. C
Addressee:  Joseph Dalton Hooker
Date:  1 Jan 186[8]
Classmark:  Royal Botanic Gardens, Kew, DC 105 f.222
Letter no:  DCP-LETT-5077F

From Hewett Cottrell Watson to J. D. Hooker   12 April 1847

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Summary

[Copy made by CD’s amanuensis.] Discusses the rarity of intermediate forms.

Author:  Hewett Cottrell Watson
Addressee:  Joseph Dalton Hooker
Date:  12 Apr 1847
Classmark:  DAR 47: 156–9
Letter no:  DCP-LETT-1079

From H. C. Watson   [after 24 July 1861]

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Summary

Gives CD an instance of facts that can be read either way as to whether a plant (Veronica humifusa) is a species or a variety.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  [after 24 July 1861]
Classmark:  DAR 47: 162
Letter no:  DCP-LETT-13853

From H. C. Watson   [16 May 1864]

Summary

Cover containing some seeds mentioned in the letter to H. C. Watson, 28 May [1864], f.2 (S 4512).

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  [16 May 1864]
Classmark:  DAR 142: 94
Letter no:  DCP-LETT-13891H

From Hewett Cottrell Watson   [19 November 1854]

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Summary

In response to CD’s query, HCW says he cannot supply "any list of species as the flora of a single and sterile soil". Suggests a possible source of information, and provides some figures for Britain, but these apply to diverse soils.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  [19 Nov 1854]
Classmark:  DAR 205.9: 402
Letter no:  DCP-LETT-1604

From H. C. Watson   20 November [1854]

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Summary

Sends a count of the number of species of flowering plants and ferns on the islands of Fayal and Flores in the Azores.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  20 Nov [1854]
Classmark:  DAR 205.4: 101
Letter no:  DCP-LETT-1605

To Hewett Cottrell Watson   [17 July 1861]

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Summary

Difficulty of distinguishing varieties and species. Did HCW suggest a printed list that might help?

Polymorphic genera.

Author:  Charles Robert Darwin
Addressee:  Hewett Cottrell Watson
Date:  [17 July 1861]
Classmark:  DAR 185: 49
Letter no:  DCP-LETT-1616

From H. C. Watson   11 July [1855]

Summary

Returns CD’s list of Azores plants with information on the distribution of the species added. Encloses a list, extracted from CD’s list, of those plants common to Europe and the Azores that were probably not introduced by man.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  11 July [1855]
Classmark:  DAR 181: 27
Letter no:  DCP-LETT-1715

From H. C. Watson   13 August 1855

Summary

Is having difficulties marking close species on the list of British plants.

In all his attempts to advance geographical botany he is stopped by the "application and signification of the word ""species"" " the use of which is both "indefinite and variable". He encloses his list of "Categories of Species".

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  13 Aug 1855
Classmark:  DAR 98: A5–A6, DAR 9: 15A
Letter no:  DCP-LETT-1740

From H. C. Watson   17 August 1855

Summary

Sends a catalogue of plants [missing] with the close species marked.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  17 Aug 1855
Classmark:  DAR 181: 28
Letter no:  DCP-LETT-1743

From H. C. Watson   23 August 1855

Summary

Close species in large and small genera.

Artificiality of botanical classification.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  23 Aug 1855
Classmark:  DAR 181: 29
Letter no:  DCP-LETT-1747

To H. C. Watson   [26 August 1855]

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Summary

On geographical distribution of plants. Plant systematics and natural classification.

Author:  Charles Robert Darwin
Addressee:  Hewett Cottrell Watson
Date:  [26 Aug 1855]
Classmark:  DAR 185: 53
Letter no:  DCP-LETT-1750

From H. C. Watson   2 October 1855

Summary

Expresses his general opinion on the relative closeness of species in large and small genera. Warns that the size of a genus is dependent upon the locality and extent of the flora studied, that definitions of close species are not consistent, and that peculiarities of botanical classification will influence any attempt to assess the comparative closeness of species in different genera.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  2 Oct 1855
Classmark:  DAR 181: 30
Letter no:  DCP-LETT-1758

From H. C. Watson   11 October 1855

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Summary

Sends London catalogue of British plants with close species marked.

Charges E. Forbes with fraudulent appropriation of others’ work.

Comments on, and cites possible cases of, CD’s imagined rule that individuals of one or more species in a genus vary in some of those characters by which the species of that genus are distinguished.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  11 Oct 1855
Classmark:  DAR 47: 163a–b
Letter no:  DCP-LETT-1764

From H. C. Watson   8 November 1855

Summary

Artificiality of orders and genera in botany.

Difficulties in numerical analysis of close species in large and small genera.

HCW has "pretty strong bias towards the view that species are not immutably distinct".

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  8 Nov 1855
Classmark:  DAR 181: 31
Letter no:  DCP-LETT-1775

From H. C. Watson   [after 23 March 1858]

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Summary

Extracts from MS of vol. 4 of HCW’s Cybele Britannica [1847–59] showing the diversity of views on species among botanists.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  [after 23 Mar 1858]
Classmark:  DAR 45: 16–17
Letter no:  DCP-LETT-1808

From Hewett Cottrell Watson   5 June 1856

Summary

Answers CD’s questions about plants common to U. S. and Britain and their distribution in Europe.

Variability of agrarian weeds.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  5 June 1856
Classmark:  DAR 181: 32
Letter no:  DCP-LETT-1891

From H. C. Watson   10 June 1856

Summary

Evidence relevant to E. Forbes’s land-bridge theory.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  10 June 1856
Classmark:  DAR 181: 33
Letter no:  DCP-LETT-1898

To H. C. Watson   [after 10 June 1856]

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Summary

Do the plants that are common to Europe and North America nearly all live north of the Arctic Circle? CD bases his question on HCW’s "capital" comparison between relations of Europe to North America and Europe to E. Asia if the intervening land had been submerged. CD has been led to speculate that in the mid-Pliocene the organisms now living in middle Europe and northern U. S. lived within the Arctic Circle. Subsequent movements of this flora with advance and retreat of glaciers would explain present distribution better than Forbes’s vast submergences.

Author:  Charles Robert Darwin
Addressee:  Hewett Cottrell Watson
Date:  [after 10 June 1856]
Classmark:  DAR 185: 52
Letter no:  DCP-LETT-1899

From H. C. Watson   20 June 1856

Summary

Conveys [? J. T. I. Boswell-]Syme’s opinion of variability of agrarian weeds and ranges of species common to U. S. and W. Europe. The Hispano-Hibernian connection.

Author:  Hewett Cottrell Watson
Addressee:  Charles Robert Darwin
Date:  20 June 1856
Classmark:  DAR 181: 34
Letter no:  DCP-LETT-1907
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letter (50)
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