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To George Brettingham Sowerby Jr   31 [March 1846]1

Down Bromley Kent

Tuesday 31

Dear Sir

I write merely to thank you for your note with the desired information.— As soon as I can find out how many Cordillera shells require illustration, I will immediately decide upon the number of the Tertiary & make arrangements for you to commence.2

Yours faithfully | C. Darwin

1
The letter has a mourning border, presumably for Elizabeth (Bessy) Wedgwood, Emma’s mother, who died on 31 March 1846.
2
In the appendix of South America, Edward Forbes described eleven species of Secondary shells of the Cordillera and George Brettingham Sowerby described sixty species of the Tertiary formations of South America. Both sets are illustrated by G. B. Sowerby Jr.

Please cite as “DCP-LETT-969,” in Ɛpsilon: The Charles Darwin Collection accessed on 5 June 2025, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-969