From:
Charles Robert Darwin
To:
Charles Lyell, 1st baronet
Date:
[16 Dec 1843]
Source of text:
American Philosophical Society (Mss.B.D25.33)
Summary:
Description and defence of his view of the tosca in Banda Oriental, along the Rio Uruguay and at the Rio Negro, taking issue with A. D. d’Orbigny. Refers to the pumice in the Patagonian Territory. Two tables show the layered tosca formation along the Uruguay.
Contributor:
Darwin Correspondence Project