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To C. G. Ehrenberg   4 July [1844]

Summary

Astonished that dust sample contains Infusoria. Thinks dust is volcanic. Will write account of falling dust [see 775]. Offers further samples.

Author:  Charles Robert Darwin
Addressee:  Christian Gottfried Ehrenberg
Date:  4 July [1844]
Classmark:  Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
Letter no:  DCP-LETT-760

From C. G. Ehrenberg   11 July 1844

Summary

Thanks for shipments of earth samples. Sends copy of article describing Infusoria in samples ["Einige vorläufige Resultate … über das Verhalten des kleinsten Lebens in den Oceanen", Ber. k. Preuss. Akad. Wiss. Berlin (1844): 182–207]. Asks for more information and samples, especially from the soundings of Ross’s expedition.

Author:  Christian Gottfried Ehrenberg
Addressee:  Charles Robert Darwin
Date:  11 July 1844
Classmark:  DAR 163: 11
Letter no:  DCP-LETT-762
Document type
letter (2)
Correspondent