To Wilhelm Bernhard Rudolph Hadrian Dunker120 September 1850
7 Park Stt. Grosvenor Sqr | London2
Much honoured Sir
I received this morning your letter of the 6th of June & a Box of fossil Cirripedia from my friend Mr J. Morris.3 The fossils have arrived quite safely.— I beg to thank you with the utmost cordiality for this act of kindness: I will take the greatest care of the specimens, & return them you in a month or two’s time, when I have completed the engravings for the Fossil Part of my Monograph.— I particularly request you to give my sincere thanks to Mm. Roemer & Philippi.—4 I know your drawings & descriptions of P. Hausmanni in the work on the Oolithgebirges,5 than which nothing can be better.—
I am making considerable progess in my monograph; I have described 38 fossil Pedunculated Cirripedia; all the recent Pedunculata including the animal’s body, & I have just finished with the 45th. species of the great & difficult genus of Balanus.— I should esteem it a great favour & most valuable aid if you would entrust me with your collection of recent species; but you will almost certainly object to send me unique specimens, when I tell you that I cannot recognise the species, & will never name any species, without disarticulating one specimen; I can, however, almost always gum together the valves so that they look nearly as well as ever.— I have, also, resolved in hardly any case to name a sessile Cirripede without the operculum.—6 I care comparatively little for specimens without their habitats.— I can assure you the genus Balanus is so difficult, that it is folly to attempt describing the species without the opercula; all the species are subject to much variation.—
If you could persuade the distinguished Philippi to send me a specimen (allowing me to disarticulate it) of the Mediterranean species which he has named,7 it would be doing me the greatest service; for I earnestly wish to avoid renaming a known species—
I am very sorry to hear that your health has been indifferent; it makes your kind assistance to me the more generous.—
With the utmost respect | Yours truly obliged | C. Darwin
Pray thank Romer & Philippi.—
Any parcel addressed as at the head of this letter, will reach me.— Sept. 20th. 1850.—
Thanks for fossil cirripede specimens.
Describes progress on his book [Fossil Cirripedia] and his work on living cirripedes. Asks to borrow specimens.
Comments on book [F. C. L. Koch and Wilhelm Dunker, Norddeutschen Oolithgebildes (1837)].
Sends thanks to Friedrich Adolph Roemer and R. A. Philippi for specimens.
- Letter no.
- Charles Robert Darwin
- Wilhelm Bernhard Rudolph Hadrian Dunker
- Sent from
- London, Park St, 7
- Source of text
- Det Kongelige Bibliotek, Copenhagen (NKS 4941 I, 4to)
- Physical description