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Darwin Correspondence Project

From William Preyer   8 May 1871


May 8, 1871

Dear Sir,

I am very thankful to you for your kind letter and the intended present of your “Descent of man.”1 But I am in possession of the book now. Only it took such a long time before I got it that I have not even yet finished reading it. We are here delighted to see that you hesitate not freely to follow up the theory to it’s last consequences. This is far more difficult in England than in Germany.

I enclose a few lines of Professor W. Müller and send his book with this letter.2 He wishes me to mention that his researches—not least the pathological part on epithelioma—adduce many new facts and arguments in favour of your theory. He began them four years ago and is now pursuing his studies on comparative embryology.

I cannot affirm that all negroes have no ear-lap.3 But Gegenbaur4 lent me two negroes ears where there is no trace of it to be found. I shall have them photographed

Hyrtl says that only the human ear has an ear-lap and this I found to be correct, as far as my knowledge reaches.5 But I shall soon get a hedge-hog.6

In Egyptian mummies I remarked some years ago at Paris a peculiarity in the position of the ear. It is situated higher up than in Europeans. Fig 1 being a modern European profile, Fig. 2 would be the same with the ear elevated as in ancient Egyptian profiles.7 Now I have never seen in civilised company anything like Fig. 2. But apes shew the same position of the ear. I find all Egyptian paintings and sculptures (2000 B.C. and backwards) have only the profiles with the ear higher up.

Now I should very much like to know whether any existing race has this peculiarity and whether you think it might be considered as a connecting link, because all mammalia have the ears standing higher up than man.

It was interesting to me to see that Rubens in his beautiful picture in the Dresden gallery gives the satyr pointed ears.8 The ear is very large but human with the only difference that it is pointed


The artist’s imagination in this case seems to have anticipated the result of scientific inquiry.

With regard to the human ear Mr. E. Ray Lankester whom I have the pleasure of seeing daily thinks it possible that the ear-lap might have been acquired/produced artificially and developed by sexual selection. I suppose you have seen in South-America (Botocudos) enormously enlarged earlaps?9

Believe me, dear Sir, | your’s truly | Preyer


Fig. 2 Fig. 1

CD annotations

1.1 I am … embryology. 2.5] crossed pencil
Alongside first diagram] ‘Embryo of Man’ pencil
7.4 The artist’s … earlaps? 8.4] crossed pencil


Preyer refers to W. Müller 1871; see letter from William Preyer, 27 April 1871 and n. 5. The enclosed note from Wilhelm Müller has not been found.
Carl Gegenbaur.
CD cited Josef Hyrtl on human ears in Descent 1: 20 n. 23, on Giovanni Canestrini’s authority.
CD had asked whether hedgehog ears were shaped like human ears. See letter to William Preyer, 30 April 1871.
See the enclosed drawing.
The reference is to Peter Paul Rubens’s painting, The drunken Hercules, in the Gemäldegallerie, Dresden.
Edwin Ray Lankester was studying under Ernst Haeckel at Jena; he also visited Leipzig and Vienna (ODNB). Botocudos was the name given by Europeans to a native people in eastern Brazil. The name is from the Portuguese word (botoque) for ‘plug’, and refers to the ornaments that were worn in the ears and lower lip (EB).
The diagram is reproduced at 66 per cent of its original size.


Descent: The descent of man, and selection in relation to sex. By Charles Darwin. 2 vols. London: John Murray. 1871.

EB: The Encyclopædia Britannica. A dictionary of arts, sciences, literature and general information. 11th edition. 29 vols. Cambridge: Cambridge University Press. 1910–11.

Müller, Wilhelm. 1871. Beiträge zur pathologischen Anatomie und Physiologie des menschlichen Rückenmarks. Leipzig: Voss.

ODNB: Oxford dictionary of national biography: from the earliest times to the year 2000. (Revised edition.) Edited by H. C. G. Matthew and Brian Harrison. 60 vols. and index. Oxford: Oxford University Press. 2004.


Delighted that CD does not hesitate to follow his theory to its last consequences. "This is far more difficult in England than in Germany."

Wilhelm Müller in his new book [Beiträge zur pathologischen Anatomie und Physiologie des menschlichen Rückenmarks (1871)], adduces many facts in favour of CD’s theory.

Various observations on the human ear. [See Descent, 2d ed., p. 14 n.]

Letter details

Letter no.
William Thierry (William) Preyer
Charles Robert Darwin
Sent from
Source of text
DAR 87: 49–51
Physical description
4pp † sketch

Please cite as

Darwin Correspondence Project, “Letter no. 7745,” accessed on 1 April 2020,

Also published in The Correspondence of Charles Darwin, vol. 19