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Letter 9091

Haeckel, E. P. A. to Darwin, C. R.

8 Oct 1873

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    On CD's paper ["Complemental males of certain cirripedes", Collected papers 2: 177–82].

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    Comments on paper by W. H. Dallinger and J. J. Drysdale ["Life history of a Cercomonad", Mon. Microsc. J. 10 (1873): 53–8].

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    Discusses origin of life, the Gastraea theory and concept that primary germ layers are homologous in all animals. Notes similar views of E. Ray Lankester ["On the primitive cell-layers of the embryo", Ann. & Mag. Nat. Hist. 4th ser. 11 (1873): 321–38].

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    Reception of Darwinism in Germany.

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