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Haeckel, Ernst in addressee 
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From:
Charles Robert Darwin
To:
Ernst Philipp August (Ernst) Haeckel
Date:
20 Jan 1873
Source of text:
Ernst-Haeckel-Haus (Bestand A-Abt. 1: 52/29)
Summary:

On EH’s Die Kalkschwämme [1872].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Ernst Philipp August (Ernst) Haeckel
Date:
25 Sept 1873
Source of text:
Ernst-Haeckel-Haus (Bestand A-Abt. 1: 1-52/30 [9883])
Summary:

Comments on EH’s Natürliche Schöpfungsgeschichte [4th ed.].

Has written paper on rudimentary structures ["Complemental males of certain cirripedes", (1873) Collected papers 2: 177–82].

Edward Morse thinks brachiopods should be classed with annelids ["The systematic position of the Brachiopoda", Proc. Boston Soc. Nat. Hist. 15 (1873): 315–73].

Contributor:
Darwin Correspondence Project