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From J. D. Hooker   [24 June 1854]

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Summary

Birth of JDH’s second child.

Asks CD’s view of "highness" and "lowness" in animals. Gives his own for plants; extent of deviation from type, e.g., floral parts deviating from leaf.

Reading B. C. Brodie’s Psychological inquiries [1854].

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [24 June 1854]
Classmark:  DAR 104: 202–4
Letter no:  DCP-LETT-1572

To J. D. Hooker   27 [June 1854]

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Summary

CD gives his definition of "highness" and "lowness" as "morphological differentiation" from a common embryo or archetype. JDH’s view, with which CD agrees when it can be applied, is the same as Milne-Edwards’, i.e., the physiological division of labour. There is little agreement among zoologists and CD admits his own lack of clarity.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  27 [June 1854]
Classmark:  DAR 114: 121
Letter no:  DCP-LETT-1573

To Edward Sabine   28 June [1854]

Summary

Is unequal to taking chair as President of Natural History Section of BAAS meeting in Liverpool. Very little fatigue or excitement brings on swimming of head, nausea, and other symptoms.

Author:  Charles Robert Darwin
Addressee:  Edward Sabine
Date:  28 June [1854]
Classmark:  The Royal Society (Sa: 386)
Letter no:  DCP-LETT-1574

From J. D. Hooker   [29 June 1854]

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Summary

JDH on "highness" of Coniferae: they are genuine Dicotyledons, not a link to cryptogams; that is a geologists’ fallacy. Thus they are highest plants in Carboniferous.

Does not agree with CD’s "elastic" species theory. Long correspondence with Lyell on this.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [29 June 1854]
Classmark:  DAR 205.9: 383
Letter no:  DCP-LETT-1576
Document type
letter (4)
Correspondent
Date
1854
06
24 (1)
27 (1)
28 (1)
29 (1)
letter