To Charles Lyell [2 September 1849]
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.
| Author: | Charles Robert Darwin |
| Addressee: | Charles Lyell, 1st baronet |
| Date: | [2 Sept 1849] |
| Classmark: | American Philosophical Society (Mss.B.D25.80) |
| Letter no: | DCP-LETT-1252 |
To Albany Hancock [21 September 1849]
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.
| Author: | Charles Robert Darwin |
| Addressee: | Albany Hancock |
| Date: | [21 Sept 1849] |
| Classmark: | Archives of the New York Botanical Garden (Charles Finney Cox Collection) |
| Letter no: | DCP-LETT-1253 |
To J. S. Henslow [26 September 1849]
Summary
Describes the Birmingham meeting [1849] of BAAS.
His health is poor. Continues with water-cure with considerable benefit.
| Author: | Charles Robert Darwin |
| Addressee: | John Stevens Henslow |
| Date: | [26 Sept 1849] |
| Classmark: | DAR 93: A92–A95 |
| Letter no: | DCP-LETT-1254 |
To Johan Georg Forchhammer 25 September [1849]
Summary
Asks to borrow cirripede specimens. Describes his research.
| Author: | Charles Robert Darwin |
| Addressee: | Johan Georg Forchhammer |
| Date: | 25 Sept [1849] |
| Classmark: | University of Copenhagen, Mineralogical Museum Archives |
| Letter no: | DCP-LETT-1255 |
To Albany Hancock 29 September [1849]
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].
| Author: | Charles Robert Darwin |
| Addressee: | Albany Hancock |
| Date: | 29 Sept [1849] |
| Classmark: | Archives of the New York Botanical Garden (Charles Finney Cox Collection) |
| Letter no: | DCP-LETT-1256 |
| letter | (5) |
| Hancock, Albany | (2) |
| Forchhammer, J. G. | (1) |
| Henslow, J. S. | (1) |
| Lyell, Charles | (1) |
| Darwin, C. R. | |
| Hancock, Albany | (2) |
| Forchhammer, J. G. | (1) |
| Henslow, J. S. | (1) |
| Lyell, Charles | (1) |
