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To Geological Society of London   [3 January 1844]


Asks that A. d’Orbigny’s geological map of S. America be sent to him with a card of the Society’s evening meetings.

Author:  Charles Robert Darwin
Addressee:  Geological Society of London
Date:  [3 Jan 1844]
Classmark:  Geological Society of London (GSL/L/R/8/92)
Letter no:  DCP-LETT-728

To Joseph Dalton Hooker   [11 January 1844]



Queries on ratios of species to genera on southern islands. CD’s observations on distribution of Galapagos organisms, and on S. American fossils, and facts he has gathered since, lead him to conclusion that species are not immutable; "it is like confessing a murder".

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  [11 Jan 1844]
Classmark:  DAR 114: 3
Letter no:  DCP-LETT-729

To Henry Denny   20 January [1844]


Discusses sending HD lice specimens. Asks him to check with G. R. Waterhouse.

Author:  Charles Robert Darwin
Addressee:  Henry Denny
Date:  20 Jan [1844]
Classmark:  American Philosophical Society (Mss.B.D25.37)
Letter no:  DCP-LETT-731

To J. D. Hooker   22 [January 1844 – March 1882]


Discusses books returned

and invites him to Down for a few days.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  22 [Jan 1844 - Mar 1882]
Classmark:  Sotheby’s (dealers) (14 & 28 May 1983)
Letter no:  DCP-LETT-13816A

To Ernst Dieffenbach   25 January 1844


Delighted to be able to contribute Infusoria to ED’s "great countryman Ehrenberg". Includes a list of eight substances from his collection described in detail, which Ehrenberg might find useful in his researches.

Author:  Charles Robert Darwin
Addressee:  Ernst Dieffenbach
Date:  25 Jan 1844
Classmark:  J. A. Stargardt (dealers) Cat. 574 1965.11.11–13
Letter no:  DCP-LETT-732

To J. D. Hooker   [27 January 1844]



C. G. Ehrenberg would like some earth from Galapagos, Tierra del Fuego, and the Falklands; wishes to hunt for Infusoria.

Author:  Charles Robert Darwin
Addressee:  Joseph Dalton Hooker
Date:  [27 Jan 1844]
Classmark:  DAR 114: 4
Letter no:  DCP-LETT-733

From J. D. Hooker   29 January 1844



Remarks on geographical divisions of the flora of the Southern Hemisphere.

JDH beginning Galapagos plants. Value of studying insular floras with respect to inquiries about adaptation of species.

Author:  Joseph Dalton Hooker
Addressee:  Charles Robert Darwin
Date:  29 Jan 1844
Classmark:  DAR 100: 5–7
Letter no:  DCP-LETT-734
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