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To Susan Darwin   [27 November 1844?]

Summary

Sends thanks for money.

Comments on treatment prescribed by his father.

Encloses notes by John Higgins with investment advice. Discusses advisability of investing in farmland in Lincolnshire. Cites advice of Sir John Lubbock concerning purchase of land.

Author:  Charles Robert Darwin
Addressee:  Susan Elizabeth Darwin
Date:  [27 Nov 1844?]
Classmark:  DAR 92: A9–10
Letter no:  DCP-LETT-833

To The Royal Geographical Society   [30 July 1844 – 1 October 1846]

Summary

Urgently needs a Spanish map of the Cordilleras of central Chile near St Jago [Santiago].

Author:  Charles Robert Darwin
Addressee:  R. Geogr. Soc.
Date:  [30 July 1844 – 1 Oct 1846]
Classmark:  Fitzwilliam Museum
Letter no:  DCP-LETT-767

To Josiah Wedgwood III   31 July 1844

Summary

Acknowledges receipt of the order for £48 4s. 8d., and offers full indemnity for the £5,000 deposited without security.

Author:  Charles Robert Darwin
Addressee:  Josiah Wedgwood, III
Date:  31 July 1844
Classmark:  Alan Wedgwood (private collection)
Letter no:  DCP-LETT-767F

To J. D. Hooker   [25 July – 29 August 1844]

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Summary

Encloses Ehrenberg letter, Galapagos seaweed, and specimens of Conferva.

H. Denny would like specimens of Antarctic Pediculi.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  [25 July–29 Aug 1844]
Classmark:  DAR 114: 15
Letter no:  DCP-LETT-768

To Adolf von Morlot   9 August [1844]

Summary

Declines to undertake to have AM’s journal published but recommends possible publishers in England.

Expresses scepticism about AM’s glacier theory. Emphasises role of floating ice instead. Mentions article by William Hopkins on movement of glaciers.

Author:  Charles Robert Darwin
Addressee:  Charles Adolphe Morlot (Adolph von Morlot)
Date:  9 Aug [1844]
Classmark:  Burgerbibliothek Bern, Bern, Switzerland
Letter no:  DCP-LETT-769

To Henry Denny   12 August [1844]

Summary

Can hardly believe he made a mistake in specimens sent to HD. Recopies numbers in case he transposed them. [Has to do with lice taken from a specimen of aperea and put into spirits during Beagle voyage.]

Author:  Charles Robert Darwin
Addressee:  Henry Denny
Date:  12 Aug [1844]
Classmark:  American Philosophical Society (Mss.B.D25.)
Letter no:  DCP-LETT-770

To Leonard Horner   29 August [1844]

Summary

Thanks Horner for his letter [about Volcanic islands].

Discusses craters of elevation with respect to the views of Leopold von Buch and Élie de Beaumont. Compares Lyell’s views to those of continental geologists. Mentions reading A. D. d’Orbigny [Voyage dans l’Amérique méridionale (1835–47)].

Encloses note from Emma to Mrs Horner, inviting the Horners to visit Down.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  29 Aug [1844]
Classmark:  American Philosophical Society (Mss.B.D25.38)
Letter no:  DCP-LETT-771

To J. D. Hooker   29 [August 1844]

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Summary

Encloses pamphlet from Ehrenberg who asks about deep-sea soundings from JDH’s voyage.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  29 [Aug 1844]
Classmark:  DAR 114: 16
Letter no:  DCP-LETT-772

To Charles Lyell   [1 September 1844]

Summary

Asks about CL’s new book [Travels in North America (1845)].

Discusses views of A. D. d’Orbigny on elevation.

Mentions reading W. H. Prescott [History of the conquest of Mexico (1843)].

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [1 Sept 1844]
Classmark:  American Philosophical Society (Mss.B.D25.39)
Letter no:  DCP-LETT-773

From J. D. Hooker   [c. 3 September 1844]

Summary

Suggests there is a direct relation between temperature and abundance of plant species.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  [c. 3 Sept 1844]
Classmark:  DAR 104: 221
Letter no:  DCP-LETT-774

To C. G. Ehrenberg   5 September [1844]

Summary

Has at last received first letter CGE wrote.

More specimens being sent.

Sends his sketch of paper ["Fine dust in the Atlantic Ocean" (1846), Collected papers 1: 199–203].

D’Orbigny considers Pampas clay deposit result of debacle. CD cannot doubt it is slow, estuary deposit. Would be grateful for information on this point.

Author:  Charles Robert Darwin
Addressee:  Christian Gottfried Ehrenberg
Date:  5 Sept [1844]
Classmark:  Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
Letter no:  DCP-LETT-775

To J. D. Hooker   [8 September 1844]

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Summary

Acknowledges note and parcel for Ehrenberg.

Considers why different areas have different numbers of species. Gives an example opposing JDH’s view that paucity of species results from vicissitudes of climate. CD has concluded that species are most numerous in areas that have most often been divided, isolated from, and then reunited with, other areas. Cannot give detailed reasons but believes that "isolation is the chief concomitant or cause of the appearance of new forms".

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  [8 Sept 1844]
Classmark:  DAR 114: 17
Letter no:  DCP-LETT-776

To Gardeners’ Chronicle and Agricultural Gazette   [before 14 September 1844]

Summary

Referring to a correspondent who had written about Pelargonium plants whose leaves had become regularly edged with white, CD reports that nearly all the young leaves of box-trees he had planted have become symmetrically tipped with white. Though these facts seem trivial, CD believes the first appearance of any peculiarity which tends to become hereditary deserves being recorded.

Author:  Charles Robert Darwin
Addressee:  Gardeners’ Chronicle
Date:  [before 14 Sept 1844]
Classmark:  Gardeners’ Chronicle and Agricultural Gazette, no. 37, 14 September 1844, pp. 621
Letter no:  DCP-LETT-777

To Gardeners’ Chronicle and Agricultural Gazette   [before 14 September 1844]

Summary

Asks whether salt and carbonate of lime (in the form of seashells) would act upon each other if slightly moistened and left in great quantities together. The question occurs from CD’s having found in Peru a great bed of recent shells that were mixed with salt, decayed and corroded "in a singular manner". Mentions, as relevant to the value of seashells as manure, that they are dissolved more rapidly by water than any other form of carbonate of lime.

Author:  Charles Robert Darwin
Addressee:  Gardeners’ Chronicle
Date:  [before 14 Sept 1844]
Classmark:  Gardeners’ Chronicle and Agricultural Gazette, no. 37, 14 September 1844, pp. 628–9
Letter no:  DCP-LETT-778

To Adolf von Morlot   10 October [1844]

Summary

Says AM’s letters on glacial action not publishable since they do not give facts. Suggests readings on the subject of glaciers. Expresses doubts about AM’s theory that Scandinavian glaciers brought the boulders he was studying.

Author:  Charles Robert Darwin
Addressee:  Charles Adolphe Morlot (Adolph von Morlot)
Date:  10 Oct [1844]
Classmark:  Burgerbibliothek Bern, Bern, Switzerland
Letter no:  DCP-LETT-780

To James David Forbes   11 October [1844]

Summary

Discusses a specimen of Mexican obsidian with an unusual laminated structure.

Author:  Charles Robert Darwin
Addressee:  James David Forbes
Date:  11 Oct [1844]
Classmark:  University of St Andrews Special Collections (Papers of J. D. Forbes: msdep7 – Incoming letters 1844, no.57)
Letter no:  DCP-LETT-781

From J. D. Hooker   28 October 1844

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Summary

Discusses the connection between climate and vegetation. Believes that an equable climate is unfavourable to increase of species either by importation or modification of existing forms; illustrates his view with reference to particular floras. Hopes to acquire facts to support CD’s idea that isolation is important in producing new forms. Considers the floras of islands some of which do have distinctive species but others of which do not. Agrees that the wide ranges of cryptogams are a consequence of their means of dispersal. Asks for references to works on original creation and species mutability in order to get the best notions of "the (mad) theories of some men from Lamarck’s twaddle upwards".

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  28 Oct 1844
Classmark:  DAR 100: 16–23
Letter no:  DCP-LETT-784

From Henry Denny   30 October 1844

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Summary

Has never heard of species of same genus [of parasites] being found on both birds and mammals, or different genera and species being found on animals in the domestic and wild states. Implications of this for relationship of aperea and guinea-pig.

Author:  Henry Denny
Addressee:  Charles Robert Darwin
Date:  30 Oct 1844
Classmark:  DAR 205.3: 273
Letter no:  DCP-LETT-785

To J. D. Forbes   [November? 1844]

Summary

Believes JDF’s discoveries in the structure of glacier ice will explain the structure of many volcanic masses. Will JDF’s views throw any light on the primary laminated rocks?

Author:  Charles Robert Darwin
Addressee:  James David Forbes
Date:  [Nov? 1844]
Classmark:  Proceedings of the Royal Society of Edinburgh 2 1845: 18)
Letter no:  DCP-LETT-786

From J. D. Hooker   5 April 1844

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Summary

Answer to CD’s query on genera and species ranges.

Comments on typical forms.

Preparing first part of Galapagos plants for printing.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  5 Apr 1844
Classmark:  DAR 100: 12–13
Letter no:  DCP-LETT-745
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