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To Charles Lyell   10 January [1855]

Summary

Discusses views of Daniel Sharpe on foliation and cleavage. Recalls his own previous discussion [in South America].

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  10 Jan [1855]
Classmark:  American Philosophical Society (Mss.B.D25.110)
Letter no:  DCP-LETT-1626

To Charles Lyell   14 January [1855]

Summary

Has found a house on Baker Street to take for a month.

Mentions Daniel Sharpe’s study of the Grampians.

Association of various metamorphic rocks and relationship of their foliation to their dip and strike. Discusses foliation of schists and its origin. Comments on fluidity of gneiss and schists.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  14 Jan [1855]
Classmark:  American Philosophical Society (Mss.B.D25.111)
Letter no:  DCP-LETT-1630

To Charles Lyell   [21 January – 11 February 1855]

Summary

Relationship of schists to alternating beds of slate in western Tierra del Fuego and the Chonos Islands.

Comments on Sharpe’s theory of curved cleavage planes.

Example of metamorphosis in a "clay-slate porphyry region". Importance of previous lines of cleavage and stratification in foliation of metamorphosed rock.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  [21 Jan – 11 Feb 1855]
Classmark:  American Philosophical Society (Mss.B.D25.112)
Letter no:  DCP-LETT-1633

To Charles Lyell   8 May [1855]

Summary

Mentions his paper ["Transportal of erratic boulders", Collected papers 1: 218–27]. Discusses ice-borne rock. Reference to unpublished paper on icebergs [?"Power of icebergs to make grooves", Collected papers 1: 252–5]. Remarks on scoring by icebergs. Comments on judgment of theories by Geological Society.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  8 May [1855]
Classmark:  American Philosophical Society (Mss.B.D25.113)
Letter no:  DCP-LETT-1679

To Charles Lyell   4 November [1855]

Summary

Comments on two pamphlets by John Bachman [probably Continuation of the review of "Nott and Gliddon’s types of mankind" (1855) and An examination of the characteristics of genera and species as applicable to the doctrine of the unity of the human race (1855)].

CD’s pigeon breeding and plant hybridization experiments.

Invites CL to visit.

Author:  Charles Robert Darwin
Addressee:  Charles Lyell, 1st baronet
Date:  4 Nov [1855]
Classmark:  American Philosophical Society (Mss.B.D25.115)
Letter no:  DCP-LETT-1772
Document type
letter (5)
Author
Addressee
Lyell, Charles[X]
Correspondent
Darwin, C. R. (5)
Lyell, Charles[X]
Date
1855
01 (3)
05 (1)
11 (1)
letter