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To Leonard Horner   [January 1847]

Summary

Responds to LH’s comments on South America.

Discusses inclination of lava stream.

Sketches in second edition of Journal of researches more accurate than in first.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  [Jan 1847]
Classmark:  DAR 145: 139
Letter no:  DCP-LETT-1048

To Leonard Horner   18 [March 1855]

Summary

CD has been a referee for LH’s Nile geology paper [Philos. Trans. R. Soc. Lond. 145 (1855): 105–38]. Praises the work but offers criticism not in his report: Joseph Russegger’s statement about the baked Upper Sandstone deposit cannot be believed; LH’s paper is too long.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  18 [Mar 1855]
Classmark:  Kinnordy MS (private collection)
Letter no:  DCP-LETT-1649

To Leonard Horner   27 April [1855]

Summary

Regrets that he has not published his information on superficial beds except in abbreviated form, on p. 143 of Volcanic islands.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  27 Apr [1855]
Classmark:  Kinnordy MS (private collection)
Letter no:  DCP-LETT-1676

To Leonard Horner   23 December [1859]

Summary

Much pleased that LH approves of Origin.

"Ilkley [Wells] did me extraordinary good."

Wants to know C. J. F. Bunbury’s opinion of Origin.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  23 Dec [1859]
Classmark:  DAR 145: 140
Letter no:  DCP-LETT-2596

To Leonard Horner    [1856–7]

Summary

Thanks LH for memorandum [missing] by K. R. Lepsius.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  [1856–7]
Classmark:  American Philosophical Society (Mss.B.D25.)
Letter no:  DCP-LETT-2618

To Leonard Horner   14 February [1861]

Summary

Variations in nature arise from unknown causes, accidentally or spontaneously, and are preserved by natural selection if beneficial.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  14 Feb [1861]
Classmark:  American Philosophical Society (Mss.B.D25.)
Letter no:  DCP-LETT-3062

To Leonard Horner   20 March [1861]

Summary

Comments on LH’s "Anniversary Address of the President", [Q. J. Geol. Soc. Lond. 17 (1861): xxxi–lxxii]. Notes LH’s comments on metamorphism, antiquity of man, and the Bible. Thanks him for his remarks on Origin.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  20 Mar [1861]
Classmark:  Sotheby’s (dealers) (9–10 July 2018, lot 374)
Letter no:  DCP-LETT-3094

To Leonard Horner   13 June [1862]

Summary

Sends condolences on death of LH’s wife. Recalls many pleasant hours in Bedford Place. He and Emma thank LH for sending the memorial paper.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  13 June [1862]
Classmark:  National Library of Scotland (MS.2216: 167)
Letter no:  DCP-LETT-3599

From Leonard Horner   7 April [1838]

Summary

Postpones meeting with CD because he must attend House of Commons for Factory Amendment Act.

Author:  Leonard Horner
Addressee:  Charles Robert Darwin
Date:  7 Apr [1838]
Classmark:  DAR 210.10:
Letter no:  DCP-LETT-408

To [Leonard Horner?]   25 June 1843

Summary

Sends notes on volcanic islands for LH to read and return.

[Letter could be an inaccurate contemporary copy to which the copyist interpolated details, or a forgery. The address "Down House Orpington Kent" occurs nowhere else.]

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  25 June 1843
Classmark:  American Philosophical Society (Mss.B.D25.31)
Letter no:  DCP-LETT-677

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 Leonard Horner   [23 December 1846 – January 1847]

Summary

Responds to LH’s comments on South America.

Thinks it unsound to designate a geological epoch after man. Doubts people’s confidence in date of man’s introduction.

Criticises A. D. d’Orbigny’s theory of elevation of the Cordillera.

Lists sections of South America of special interest.

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  [23 Dec 1846 – Jan 1847]
Classmark:  DAR 145: 138
Letter no:  DCP-LETT-977

To Leonard Horner   [17 August – 7 September 1846]

Summary

Discusses proposed survey of Glen Roy. Mentions Glen Roy theories of Agassiz and William Buckland. Includes a memorandum calling for a careful survey of the parallel roads of Glen Roy. Mentions M. A. Bravais ["On the lines of ancient level of the sea in Finmark", Q. J. Geol. Soc. Lond. 1 (1845): 534].

Author:  Charles Robert Darwin
Addressee:  Leonard Horner
Date:  [17 Aug – 7 Sept 1846]
Classmark:  American Philosophical Society (Mss.B.D25.53); DAR 145: 136–7 (enclosure)
Letter no:  DCP-LETT-993
Document type
letter (13)
Addressee
Correspondent
Date
1838 (1)
1843 (1)
1844 (1)
1846 (2)
1847 (1)
1855 (2)
1856 (1)
1859 (1)
1861 (2)
1862 (1)
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