Search: 1840-1849 in date 
Darwin, C. R. in correspondent 
Sharpe, Daniel in correspondent 
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DCP-LETT-1016

From:
Charles Robert Darwin
To:
Daniel Sharpe
Date:
[1 Nov 1846]
Source of text:
The British Library (Add MS 37725: ff. 4–5)
Summary:

Discusses foliation and cleavage. Comments on dip of cleavage laminae in mountains. Mentions views of Sedgwick and Studer. Suggests reading C. L. von Buch [Travels through Norway and Lapland (1813)] "as an amusement". Praises views of William Hopkins. Suggests reading paper by H. D. Rogers ["On cleavage of slate-strata", Edinburgh New Philos. J. 41 (1846): 422–3)]. Comments on the paper.

Contributor:
Darwin Correspondence Project

DCP-LETT-1017F

From:
Charles Robert Darwin
To:
Daniel Sharpe
Date:
[4 Nov 1846]
Source of text:
James Cummins, Bookseller (dealer) (December 2010)
Summary:

Supposes Sharpe does not want Von Buch’s tract, so sent Hopkins. Asks it be returned to CD at the Athenaeum Club.

Contributor:
Darwin Correspondence Project

DCP-LETT-1052

From:
Charles Robert Darwin
To:
Daniel Sharpe
Date:
[19 Jan 1847]
Source of text:
The British Library (Add MS 42240: 21–2)
Summary:

Comments on letter by Bernhard Studer ["Remarks on the geological relations of the gneiss of the Alps", Edinburgh New Philos. J. 42 (1846–7): 186] and on article by DS ["On slaty cleavage", J. Geol. Soc. Lond. 3 (1847): 74–105]. Discusses geological cleavage and foliation.

Contributor:
Darwin Correspondence Project

DCP-LETT-1083

From:
Charles Robert Darwin
To:
Daniel Sharpe
Date:
[23 Jan 1847]
Source of text:
UCL Library Services, Special Collections (PEARSON/10/1)
Summary:

Comments on manuscript [? "On slaty cleavage", J. Geol. Soc. Lond. 5 (1849): 111–29]. Discusses phenomenon of cleavage. Will write to J. D. Forbes about DS’s paper.

Contributor:
Darwin Correspondence Project

DCP-LETT-991

From:
Charles Robert Darwin
To:
Daniel Sharpe
Date:
23 Aug [1848?]
Source of text:
DAR 147: 47
Summary:

Thanks for note.

Glad DS sticks to cleavage and foliation question. Bernhard Studer one of few to take correct view on subject.

Contributor:
Darwin Correspondence Project
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