From Fritz Müller 13 February 1866
Summary
Thanks CD for Journal of researches.
Insect genus Elater is an exception to the rule that all luminous organs give out a green light.
Gives some observations on climbing plants at Itajahy.
His study of orchids has convinced him of the value of CD’s book.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 13 Feb 1866 |
Classmark: | Möller ed. 1915–21, 2: 79–80 |
Letter no: | DCP-LETT-5004A |
From Fritz Müller 6 March 1866
Summary
Thanks CD for German translation of Origin.
Droughts over the summers have brought about changes in the numbers of plants and animals in the area. The small quantity of Orchestia darwinii that has survived the changes no longer includes two previously common male forms. Great changes also take place without such unusual physical conditions. The disappearance of a briefly abundant bryozoan in local caves has made way not for the return of original bryozoan inhabitants but for a completely new fauna.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 6 Mar 1866 |
Classmark: | Möller ed. 1915–21, 2: 80–2 |
Letter no: | DCP-LETT-5027A |
From Fritz Müller 2 August 1866
Summary
Gives some observations on orchids and on some plants which seem to be dichogamous.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 2 Aug 1866 |
Classmark: | DAR 76: B33, 33a; DAR 157a: 81, 102; DAR 142: 38 |
Letter no: | DCP-LETT-5173 |
From Fritz Müller 1 and 3 October 1866
Summary
Discusses dimorphism of Oxalis; one form has 99% sterile anthers. Has found three kinds of fertile anthers.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 1 and 3 Oct 1866 |
Classmark: | DAR 142: 99; DAR 157a: 103 |
Letter no: | DCP-LETT-5226 |
From Fritz Müller [2 November 1866]
Summary
Sends his observations on sterility of Eschscholzia,
on Oxalis,
and on recently found dimorphic plants.
Sends specimen of Hedyotis [see Forms of flowers, p. 133].
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | [2 Nov 1866] |
Classmark: | DAR 111: B59, DAR 142: 100, 101, 105, Möller ed. 1915–21, 2: 93–4 |
Letter no: | DCP-LETT-5264 |
From Fritz Müller 1 December 1866
Summary
Gives observations on orchid ovules ripening long after blooming.
Infertility with own pollen sometimes does and sometimes does not indicate dimorphism; gives observations on Ximenia, Eschscholtzia and Oncidium flexuosum.
Describes some striking seeds eaten by birds,
and some new dimorphic species.
Variation in Thillia.
Confirms CD’s suspicion that the lancet-fish [Amphioxus] lives in competition with invertebrates: it shares its habitat with a similar-looking Ophelia, which is quite unlike other annelids, just as the lancet-fish is unlike other fishes.
Author: | Johann Friedrich Theodor (Fritz) Müller |
Addressee: | Charles Robert Darwin |
Date: | 1 Dec 1866 |
Classmark: | Möller ed. 1915–21, 2: 99–102. |
Letter no: | DCP-LETT-5292A |
To Fritz Müller 11 January 1866
Summary
Has read FM’s paper on sponges ["Über Darwinella aurea", Arch. Miskrosk. Anat. 1 (1865): 344–53] with interest.
Has also read FM’s work on the metamorphoses of Peneus [Ann. & Mag. Nat. Hist. 3d ser. 14 (1864): 104–15], an interesting and important embryological discovery.
CD regards Louis Agassiz’s opinions as valueless.
Author: | Charles Robert Darwin |
Addressee: | Johann Friedrich Theodor (Fritz) Müller |
Date: | 11 Jan 1866 |
Classmark: | The British Library (Loan MS 10 no 5) |
Letter no: | DCP-LETT-4972 |
To Fritz Müller [9 and] 15 April [1866]
Summary
Structure of Scaevola and its fertilisation with insect aid.
Fertilisation of Aristolochia.
FM’s paper on climbing plants [see 5146].
Is preparing new edition of Origin.
Author: | Charles Robert Darwin |
Addressee: | Johann Friedrich Theodor (Fritz) Müller |
Date: | 9 and 15 Apr 1866 |
Classmark: | The British Library (Loan MS 10 no 6) |
Letter no: | DCP-LETT-5050 |
To Fritz Müller 23 May 1866
Summary
Thanks for information on orchids
and facts on coastal flora and fauna.
Asks FM to look out for dimorphic aquatic and marsh plants.
Has read pamphlets "in our favour" by Carl v. Nägeli and Oscar Schmidt.
Author: | Charles Robert Darwin |
Addressee: | Johann Friedrich Theodor (Fritz) Müller |
Date: | 23 May 1866 |
Classmark: | The British Library (Loan MS 10 no 7) |
Letter no: | DCP-LETT-5097 |
To Fritz Müller 23 August [1866]
Summary
Thanks for observations on orchids.
FM’s paper on climbing plants [see 5146]; CD has received proofs.
Carl Claus’s pamphlet on copepods [Die Copepodenfauna von Nizza (1866)].
Author: | Charles Robert Darwin |
Addressee: | Johann Friedrich Theodor (Fritz) Müller |
Date: | 23 Aug [1866] |
Classmark: | The British Library (Loan MS 10 no 8) |
Letter no: | DCP-LETT-5196 |
To Fritz Müller 25 September [1866]
Summary
Fertilisation in orchids: Friedrich Hildebrand’s paper.
Self-sterility.
Climbing plants.
Agassiz’s attempts to eliminate all Darwinian views.
Author: | Charles Robert Darwin |
Addressee: | Johann Friedrich Theodor (Fritz) Müller |
Date: | 25 Sept [1866] |
Classmark: | The British Library (Loan MS 10 no 9) |
Letter no: | DCP-LETT-5216 |
To Fritz Müller [before 10 December 1866]
Summary
Hildebrand’s paper on trimorphism in Oxalis ["Über den Trimorphismus in der Gattung Oxalis", Monatsber. K. Preuss. Akad. Wiss. Berlin (1866): 352–74].
Problems of explaining brightly coloured, attractive seeds.
Haeckel has visited Down.
FM’s climbing plants paper is printed [J. Proc. Linn. Soc. Lond. (Bot.) 9 (1867): 344–9].
Author: | Charles Robert Darwin |
Addressee: | Johann Friedrich Theodor (Fritz) Müller |
Date: | [before 10 Dec 1866] |
Classmark: | The British Library (Loan MS 10 no 10) |
Letter no: | DCP-LETT-5261 |
To Fritz Müller [late December 1866 and] 1 January 1867
Summary
Thanks for observations on dimorphic plants. Dimorphism prevalent in certain groups throughout the world.
Retarded fertilisation in certain orchids.
Author: | Charles Robert Darwin |
Addressee: | Johann Friedrich Theodor (Fritz) Müller |
Date: | 31 Dec 1866 and 1 Jan 1867 |
Classmark: | The British Library (Loan MS 10 no 11) |
Letter no: | DCP-LETT-5331 |
letter | (13) |
Darwin, C. R. | (7) |
Müller, Fritz | (6) |
Müller, Fritz | (7) |
Darwin, C. R. | (6) |