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From:
Charles Robert Darwin
To:
Friedrich Wilhelm Heinrich Alexander (Alexander) von Humboldt
Date:
1 Nov 1839
Source of text:
Staatsbibliothek zu Berlin – Preußischer Kulturbesitz (Nachl. Alexander von Humboldt, gr. Kasten 4, Nr. 22, Bl. 1–2)
Summary:

Gratified by AvH’s letter.

Sends data on temperature of the sea in the Galapagos, South Pacific, and the Abrolhos Islands.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
John Washington; Royal Geographical Society
Date:
1 Nov [1839]
Source of text:
Royal Geographical Society
Summary:

CD thinks report of a rock imbedded in an iceberg is remarkable; wants to write a note for the [Journal] about it. Asks for location of the sighting and a chart of the Antarctic Sea. [See "Rock seen on an iceberg", Collected papers 1: 137–9.]

Contributor:
Darwin Correspondence Project