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To Fritz Müller   3 April [1868]

Summary

Movement in plants.

Dimorphism.

Would welcome FM’s opinion of Pangenesis.

Author:  Charles Robert Darwin
Addressee:  Johann Friedrich Theodor (Fritz) Müller
Date:  3 Apr [1868]
Classmark:  The British Library (Loan MS 10 no 23)
Letter no:  DCP-LETT-6085

From Fritz Müller   3 April 1868

Summary

Thanks CD for sending him copy of Variation.

Describes results of his brother’s [August Müller] experiments on effect of climate on maize.

Like ancestors of horses, young tapir is also striped.

Author:  Johann Friedrich Theodor (Fritz) Müller
Addressee:  Charles Robert Darwin
Date:  3 Apr 1868
Classmark:  Möller ed. 1915–21, 2: 137–8
Letter no:  DCP-LETT-6089A

From Fritz Müller   22 April 1868

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Summary

His opinion of Pangenesis.

On relative proportion of sexes in marine animals [sthg missing!?] Crustacea.

Sexual differences.

Music of Cicadae.

Author:  Johann Friedrich Theodor (Fritz) Müller
Addressee:  Charles Robert Darwin
Date:  22 Apr 1868
Classmark:  DAR 86: A85–6; Möller 1915–21, 2: 140; Darwin Library–CUL (tipped into CD’s copy of F. Müller 1864a)
Letter no:  DCP-LETT-6140
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Darwin, C. R.disabled_by_default
Müller, Fritzdisabled_by_default