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DCP-LETT-1252

From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
[2 Sept 1849]
Source of text:
American Philosophical Society (Mss.B.D25.80)
Summary:

Discusses effect of subsidence and elevation on deposits. Cites examples along coasts of South America and Wales. Proposes theory to explain thickness of deposits in south Wales.

Asks CL’s opinion of his theory of "craters of elevation" described in Volcanic islands.

Mentions CL’s comparison of Mississippi beds to the Pampas.

Comments on Poulett Scrope’s views on the separation of basalt and trachyte.

Describes his cirripede work.

Contributor:
Darwin Correspondence Project

DCP-LETT-1253

From:
Charles Robert Darwin
To:
Albany Hancock
Date:
[21 Sept 1849]
Source of text:
Archives of the New York Botanical Garden (Charles Finney Cox Collection)
Summary:

Describes his research on cirripedes.

Comments on paper by AH ["Notice of a burrowing barnacle", Ann. & Mag. Nat. Hist. 2d ser. 4 (1849): 305–14]. Asks to borrow specimens.

Contributor:
Darwin Correspondence Project

DCP-LETT-1255

From:
Charles Robert Darwin
To:
Johan Georg Forchhammer
Date:
25 Sept [1849]
Source of text:
University of Copenhagen, Mineralogical Museum Archives
Summary:

Asks to borrow cirripede specimens. Describes his research.

Contributor:
Darwin Correspondence Project

DCP-LETT-1254

From:
Charles Robert Darwin
To:
John Stevens Henslow
Date:
[26 Sept 1849]
Source of text:
DAR 93: A92–A95
Summary:

Describes the Birmingham meeting [1849] of BAAS.

His health is poor. Continues with water-cure with considerable benefit.

Contributor:
Darwin Correspondence Project
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DCP-LETT-1256

From:
Charles Robert Darwin
To:
Albany Hancock
Date:
29 Sept [1849]
Source of text:
Archives of the New York Botanical Garden (Charles Finney Cox Collection)
Summary:

Thanks AH for specimens of Alcippe.

Discusses capacity of Lithotrya to bore its own hole. Believes Arthrobalanus also makes cavities this way.

Asks to see paper on cirripedes by Sven Lovén.

Comments on paper by AH [see 1253].

Contributor:
Darwin Correspondence Project

DCP-LETT-1257

From:
Joseph Dalton Hooker
To:
Charles Robert Darwin
Date:
30 Sept 1849
Source of text:
Royal Botanic Gardens, Kew (India letters 1847–51: 217–18 JDH/1/10)
Summary:

CD partly right. JDH was calling "stratification" what CD calls "foliation". Answers CD’s question on cleavage foliation in Himalayas. Glacial action.

Charmed by CD’s Admiralty instructions on geology [in Manual of scientific enquiry (1849), Collected papers 1: 227–50], but complains he does not give prices of books and instruments he recommends.

Contributor:
Darwin Correspondence Project
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