On HM’s Befruchtung der Blumen [1873].
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On HM’s Befruchtung der Blumen [1873].
Comments on Fritz Müller’s article on Hedychium.
Thanks HM for his review [of Forms of flowers, Kosmos 2 (1877–8): 286].
Thinks HM’s previous article was very important [Kosmos 2 (1877–8): 128–40]. CD will "heartily rejoice" if HM has explained the steps by which Rhamnus and Valeriana have been rendered dioecious.
Writing on vegetable physiology.
Nothing in CD’s life has ever interested him more than the fertilisation of such plants as Primula and Lythrum.
Has just heard that HM has been treated shamefully by his Government. What has happened?
Enjoyed HM’s castigation of Gaston Bonnier ["Gaston Bonniers angebliche Widerlegung der modernen Blumentheorie", Kosmos 7 (1880): 219–36].
Has heard of flood from which Fritz Müller escaped. Has he lost books, microscope, apparatus? Offers £50 or £100.
Has learned that Fritz Müller is HM’s brother.
Made aware by Asa Gray of error with respect to Cypripedium. Does not doubt it is self-fertilised.
Müller’s observations on orchids excellent.
Offers to undertake publication of English translation of Fritz Müller’s Für Darwin. W. S. Dallas will translate it.
Pleased HM says good words for Pangenesis.
Interested that HM is studying structure of insects in relation to flowers.
Comments on HM’s paper ["Anwendung der Darwin’schen Lehre auf Bienen", Verh. Naturhist. Ver. preuss. Rheinland 29 (1872): 1–96];
sexual selection in bees.
Encloses account on habits of Bombus.
Comments on HM’s book [Die Befruchtung der Blumen (1873)]. Particularly glad to read historical sketch and discussion of work of C. K. Sprengel.
Further comments on HM’s [Befruchtung der Blumen (1873)].
Thanks for Insectivorous plants.
Believes Lepidoptera are of greater importance as fertilisers in alpine regions than in lowlands.
The famous stone pits of Ohningen are for sale.
Is glad CD is working on cross- and self-fertilisation; reports recent works of botanists, notably Thomas Meehan’s ["Are insects any material aid to plants in fertilisation?", Philadelphia Press 13 Aug 1875], in which the importance of cross-fertilisation is denied.
Observations on hive- and humble-bees. Perforating habits differ in different individuals of the same species.
Bombus mastrucatus, an alpine bee, conforms to his observations that B. terrestris breaks open the flowers of Trifolium pratense. However, in the Alps, B. terrestris does not behave this way.
Gentiana species are adapted to lepidopteran cross-fertilisation.