From Fritz Müller 12 January 1869
Summary
Gives details of some crossing experiments with Eschscholzia.
Describes the grass Streptochaeta, which FM believes to be a primitive grass.
Relates some observations on maize that are well explained by Pangenesis.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 12 Jan 1869 |
Classmark: | DAR 76: B34–5 |
Letter no: | DCP-LETT-6549 |
From Fritz Müller 14 March 1869
Summary
Describes experiments with sterility in Abutilon.
Describes hermaphroditism in a wild Begonia in Brazil.
Has been observing humble bees on Salvia.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 14 Mar 1869 |
Classmark: | Linnean Society of London (SP 859) |
Letter no: | DCP-LETT-6662F |
From Fritz Müller 15 June 1869
Summary
FM much gratified by the appearance of Für Darwin translation.
Discusses dimorphism in Rubiaceae.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 15 June 1869 |
Classmark: | DAR 110: B115; Royal Botanic Gardens, Kew (Directors’ Correspondence 215/175) |
Letter no: | DCP-LETT-6783 |
From Fritz Müller 18 October 1869
Summary
Describes experiments to test the fertility of Abutilon, which appears self-sterile,
and briefly mentions dichogamy in Eschscholzia.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 18 Oct 1869 |
Classmark: | DAR 76: B178, Linnean Society of London (LS Ms 299/12) |
Letter no: | DCP-LETT-6943 |
From Fritz Müller 18 December 1869
Summary
Discusses dimorphic and trimorphic plants; mentions especially Rubiaceae and a dimorphic monocotyledon.
Notes observations on the monstrous male flowers of Begonia,
and on self-sterile plants.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 18 Dec 1869 |
Classmark: | DAR 109: B125–6 |
Letter no: | DCP-LETT-7029 |
From Fritz Müller 16 February 1870
Summary
Sends specimens of Passiflora and seeds for T. H. Farrer [letter enclosed with 7188].
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 16 Feb 1870 |
Classmark: | Linnean Society of London |
Letter no: | DCP-LETT-7108 |
From Fritz Müller 29 March 1870
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 29 Mar 1870 |
Classmark: | DAR 76: B36 |
Letter no: | DCP-LETT-7150 |
From Fritz Müller 14 June 1871
Summary
Discussion of mimicry and sexual selection among butterflies, occasioned by reading Descent.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 14 June 1871 |
Classmark: | DAR 89: 91–3; DAR 142: 58 |
Letter no: | DCP-LETT-7820 |
From Fritz Müller 16 January 1872
Summary
Has no objection to CD’s alluding to FM’s idea that sexual selection has come into play in mimetic butterflies.
Reports observations on other butterflies and on termites.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 16 Jan 1872 |
Classmark: | DAR 142: 55 |
Letter no: | DCP-LETT-8161 |
From Fritz Müller [c. January 1874]
Summary
Agrees with Bates that neuter termites are not modified imagos (sterile females), but modified larvae (of both sexes).
Systematic relations of stingless honey-bees (Melipona and Trigona) are not yet well established.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | [c. Jan 1874] |
Classmark: | Nature, 19 February 1874, p. 309 |
Letter no: | DCP-LETT-9281 |
From Fritz Müller 20 April [1874]
Summary
FM gives his own observations of leaf-cutting ants, which support those of Thomas Belt in his book [The naturalist in Nicaragua (1873)]. [See 9223.] These ants feed only upon the fungus that grows upon the leaves that they carry to their nests.
He has caught a moth of the Glaucopidæ that when touched emitted a cloud of snow-white wool.
Observations on the stingless bees of Brazil.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 20 Apr [1874] |
Classmark: | Nature, 11 June 1874, pp. 102–3 |
Letter no: | DCP-LETT-9422A |
letter | (111) |
Darwin, C. R. | (58) |
Müller, Fritz | (53) |
Müller, Fritz | (58) |
Darwin, C. R. | (53) |