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Asks for information about JC’s essay, "On the relation of the domesticated animals to civilisation" [read at BAAS meeting 1859].
Gives CD an instance of facts that can be read either way as to whether a plant (Veronica humifusa) is a species or a variety.
Difficulty of distinguishing varieties and species. Did HCW suggest a printed list that might help?
Polymorphic genera.
Thanks for mentioning J. G. Kurr on nectaries [Untersuchungen über die Bedeutung der Nektarien in den Blumen (1833)]. Requests observations on flowers with curved pistils. Finds they curve toward nectary, thus lying in path of insect.
Elaborates on his article ["A popular exposition of Mr Darwin on the origin of species", Macmillan’s Mag. 3 (1860): 81–92]. Was anxious to point out that CD’s method of investigation is philosophically correct. Asks permission to call.
Comments on JL’s paper ["Notes on the generative organs, and on the formation of the egg in the Annulosa", Proc. R. Soc. Lond. 11 (1860–2): 117–24].
List of references on orchid structure and fertilisation.
Responds to CD’s inquiries about rattlesnake.