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From J. D. Hooker   [11 April 1857]

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Summary

JDH cites W. H. Harvey’s observations on Fucus and David Don’s on Juncus as examples of variations that are independent of climate. There are many such cases. Gives his working scheme for categorising variation.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [11 Apr 1857]
Classmark:  DAR 104: 198–201
Letter no:  DCP-LETT-2074

From J. D. Hooker   [27] June 1857

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Summary

Embryology of plants of low systematic order. Comparative development begins only with first post-cotyledonary leaves.

Curt letter to JDH from George Henslow.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [27] June 1857
Classmark:  DAR 100: 115
Letter no:  DCP-LETT-2114

From J. D. Hooker   [2 December 1857]

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Summary

News of Mrs Henslow’s death.

Studying Impatiens, which bears on CD’s problems. Though genus is endemic to India, with over 100 species, CD will be glad to know they do not run into one another.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [2 Dec 1857]
Classmark:  DAR 104: 178–9
Letter no:  DCP-LETT-2178

From J. D. Hooker   [6 December 1857]

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Summary

Finds CD’s results [of his survey of well-marked varieties from A. P. and Alphonse de Candolle’s Prodromus systematis naturalis regni vegetabilis (1824–73)] "very curious and suggestive". Thinks the Labiatae will present an obstacle to him as it is a very large and distinct order with well-defined species and genera. Would like to see him tackle more volumes of Candolle’s Prodromus, as his case can only be established by evidence from mundane plants. CD should beware of generalising from local species variability. A comparison of C. C. Babington’s and G. Bentham’s [British] Floras [Babington Manual of British botany (1843, 4th ed., 1856); Bentham Handbook of British flora (1858)] would be invaluable. Suggests CD write to Ferdinand Müller and Charles Moore in Australia. Moisture favouring extension of species is important for CD’s view.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [6 Dec 1857]
Classmark:  DAR 104: 195–6, DAR 47: 192
Letter no:  DCP-LETT-2181

From J. D. Hooker   [17–23 December 1857]

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Sending more Candolle volumes for survey of species with well-marked varieties.

Has begun his introduction [to Flora Tasmaniae]; will not make generalisations.

J. D. Dana’s pamphlet too metaphysical for JDH.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [17–23 Dec 1857]
Classmark:  DAR 104: 194
Letter no:  DCP-LETT-2188
Document type
letter (5)
Author
Hooker, J. D.[X]
Addressee
Darwin, C. R.[X]
Correspondent
Date
1857
04 (1)
06 (1)
12 (3)
letter