From:
Charles Robert Darwin
To:
Christian Gottfried Ehrenberg
Date:
4 July [1844]
Source of text:
Museum für Naturkunde Berlin (MfN/HBSB, N005 NL Christian Gottfried Ehrenberg Nr. 43)
Summary:
Astonished that dust sample contains Infusoria. Thinks dust is volcanic. Will write account of falling dust [see 775]. Offers further samples.
Contributor:
Darwin Correspondence Project