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Müller, Fritz in addressee 
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From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
11 Feb 1868
Source of text:
The British Library (Loan MS 10 no 21)
Summary:

Is working on sexual selection and is interested in any anomalous sex ratios in lower animals and any sex-related characters.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
16 Mar [1868]
Source of text:
The British Library (Loan MS 10 no 22)
Summary:

CD arranging for a translation of FM’s Für Darwin by W. S. Dallas.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
3 Apr [1868]
Source of text:
The British Library (Loan MS 10 no 23)
Summary:

Movement in plants.

Dimorphism.

Would welcome FM’s opinion of Pangenesis.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
3 June 1868
Source of text:
The British Library (Loan MS 10 no 24)
Summary:

Is glad FM approves of a translation of Für Darwin.

Hopes FM will think well of Pangenesis.

Sexual differences in insect auditory and stridulating organs.

Read FM’s paper on Balanus with great interest ["On Balanus armatus", Ann. & Mag. Nat. Hist. 4th ser. 1 (1868): 393–412].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
17 Aug 1868
Source of text:
The British Library (Loan MS 10 no 25)
Summary:

FM’s additions for English edition [1869] of Für Darwin.

Dimorphic plants.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
28 Nov 1868
Source of text:
The British Library (Loan MS 10 no 26)
Summary:

Delay in translating Für Darwin.

Comments on plan to repeat CD’s experiments on illegitimate offspring.

FM’s observations on stridulation.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
14 Mar 1869
Source of text:
The British Library (Loan MS 10 no 27)
Summary:

Translation of Für Darwin has been published [Facts and arguments for Darwin (1869)].

Discusses dimorphic plants, commenting on FM’s observations on Oxalis.

Is greatly interested in Eschscholzia, which seems somewhat more self-sterile in Brazil than in England.

Thinks FM’s grass is "most wonderful".

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
18 Mar 1869
Source of text:
The British Library (Loan MS 10 no 28)
Summary:

On English edition of Für Darwin; CD’s gratitude and admiration.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
18 July [1869]
Source of text:
The British Library (Loan MS 10 no 29)
Summary:

Reports reviews of Facts and arguments for Darwin [1869].

Is preparing for a French translation of Orchids.

The case of Abutilon which is sterile with some individuals is remarkable.

Has sent FM’s account of the monstrous Begonia to the Linnean Society.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
8 Sept [1869]
Source of text:
The British Library (Loan MS 10 no 30)
Summary:

Wants observations on a Papilio to see whether ticking noise is confined to one sex.

Experiments on self-sterility.

Will send copy of his orchid paper ["Fertilisation of orchids", Collected papers 2: 138–56].

Eschscholzia when self-fertilised, produced pods.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
1 Dec [1869]
Source of text:
The British Library (Loan MS 10 no 31)
Summary:

Role of humming-birds in plant fertilisation.

Alexander Agassiz has visited Down.

Sales of Facts and arguments for Darwin.

Encloses copy of T. H. Farrer letter [7015] and observations on the self-sterility of Eschscholzia.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
12 May 1870
Source of text:
The British Library (Loan MS 10 no 32)
Summary:

Crossing experiments and self-sterility [in Eschscholzia].

Pangenesis.

Hermann Müller on insect adaptations for fertilisation of flowers.

CD working on book on man and sexual selection.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
28 Aug 1870
Source of text:
The British Library (Loan MS 10 no 33)
Summary:

Mimicry in Lepidoptera.

Sexual selection.

The Franco-Prussian war.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
2 Aug [1871]
Source of text:
The British Library (Loan MS 10 no 34)
Summary:

Opinions on Descent.

Sexual selection and mimicry in Lepidoptera; sexual selection as an aid to protective imitation.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
25 Sept 1873
Source of text:
The British Library (Loan MS 10 no 35)
Summary:

Seedling vigour resulting from crossing of parents.

CD to publish work on insectivorous plants.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
1 Jan 1874
Source of text:
The British Library (Loan MS 10 no 36)
Summary:

Thanks for two pamphlets.

Sends Thomas Belt’s [The naturalist in Nicaragua (1874)], "the best Nat. Hist. book of travels ever published".

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
13 Feb 1874
Source of text:
The British Library (Loan MS 10 no 37)
Summary:

Has sent FM’s letter on termites to Nature ["Habits of various insects", Nature 10 (1874): 102–3].

Would be interested in observations on the stingless bees of Brazil.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
[9 Feb 1876]
Source of text:
The British Library (Loan MS 10 no 38) (EH 88205868)
Summary:

Has sent FM’s letter on to Nature ["Brazil kitchen middens, habits of ants, etc.", Nature 13 (1876): 304–5].

Would be grateful for Ceropegia seeds.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
[18 Feb 1876]
Source of text:
The British Library (Loan MS 10 no 39) (EH 88205869)
Summary:

Has received seeds of Cecropia peltata from Kew.

Has asked Hermann Müller to send copy of FM’s paper as soon as published.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
11 Dec 1876
Source of text:
The British Library (Loan MS 10 no 40) (EH 88205870)
Summary:

FM’s new position in Rio.

CD interested in nature of surface deposits at Rio.

Sends a copy of Cross and self-fertilisation.

Contributor:
Darwin Correspondence Project