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Steenstrup, Japetus in correspondent 
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From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
30 Dec [1849]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

CD is distressed that JS’s shipment of fossils has been lost: "of all the Cirripedes in the world, I most wish to dissect the Alepas squalicola". Welcomes JS’s offer to send some northern recent species. CD finds great confusion in the current classification of cirripedes in British museums; different genera are made into one species, mere varieties are made into distinct species. If JS would give him some named common northern species, it would be of great assistance.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
25 Jan [1850]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Thanks JS for fossil cirripedes. Discusses the specimens. Sends thanks to J. G. Forchhammer for specimens.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
3 Apr [1850]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Describes progress of research on fossil cirripedes. Comments on specimens sent by JS. Asks about age of several European formations, and for information about specimens.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
20 May [1850]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Describes progress in illustration of fossil cirripede specimens. Thanks for answers to questions. Comments on hermaphroditism. Describes his discovery of parasitic male cirripedes.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
15 June [1850]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Asks him to send additional cirripede specimens.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
1 Sept [1850]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Fossil cirripede specimens have arrived.

Describes progress on his monograph [Fossil Cirripedia].

Would be grateful for the paper on Lithotrya. Asks for information.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
3 Apr 1851
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Fossil cirripedes specimens being returned. Will send a copy of monograph [Fossil Cirripedia]. Discusses work on recent cirripedes.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
9 Sept [1851]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Returns fossil cirripede specimens to JS and Forchhammer.

Sends copies [of Fossil Cirripedia] to them and to Sven Lovén.

Reading proofs [of Living Cirripedia].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
16 Oct [1851]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Thanks him for specimens of Xenobalanus. Discusses systematic relations of the genus.

Comments on paper by J. T. Reinhardt ["Om slaegten Lithotryas", Vidensk. Medd. Naturhist. Foren. Kjobenhavn 2 (1850): 1–8].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
4 Nov [1851]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Asks for reference to publication about Xenobalanus.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
3 Jan [1852]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Asks JS to compare cirripede specimens with those of Lorenz Spengler to establish comparative nomenclature.

Requests reference to article describing Xenobalanus.

Contributor:
Darwin Correspondence Project
From:
Johannes Japetus Smith (Japetus) Steenstrup
To:
Charles Robert Darwin
Date:
8 Apr 1852
Source of text:
Det Kongelige Bibliotek, Copenhagen
Summary:

His difficulties in answering CD’s letter of 3 Jan [1852] [see 1469]. There is no Lepas mitra in the Lorenz Spengler collection. He undertakes to compare the specimens of Balanus sent by CD with those of Spengler.

He thanks CD for his book [Fossil Cirripedia (1851)].

His work with Professor Forchhammer and Mr Worsaae.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
7 Sept [1854]
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to); Natural History Museum of Denmark
Summary:

Offers to send collection of cirripedes to Copenhagen Museum in return for assistance in his research. Mentions publication of Living Cirripedia, vol. 2.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
23 May [1874-5]
Source of text:
Det Kongelige Bibliotek, Copenhagen (tipped into a copy of Orchids )
Summary:

"With kind regards, & many thanks for Prof. Steenstrup’s Photograph, which is most highly valued by C. Darwin"

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
11 Sept 1876
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to); Kantonsbibliothek Vadiana (VadSlg NL 202: 33: 27q)
Summary:

Thanks JS for three essays. Has read with great interest the essay on the basking shark ["Sur les appareils tamiseurs ou fanons branchiaux du Pélerin", Kjo|benhaven Oversigt (1873): 47–66]. The explanation that the comb-like structures are of the nature of teeth is a "most wonderful case".

Sends his photograph.

Contributor:
Darwin Correspondence Project
From:
Johannes Japetus Smith (Japetus) Steenstrup
To:
Charles Robert Darwin
Date:
[after 11 Sept 1876]
Source of text:
Kantonsbibliothek Vadiana (VadSlg NL 202: 33: 27q)
Summary:

Thanks CD for sending a photograph.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Johannes Japetus Smith (Japetus) Steenstrup
Date:
28 July 1881
Source of text:
Det Kongelige Bibliotek, Copenhagen (NKS 3460 4to)
Summary:

Thanks JS for essays. CD read the French abstracts [of "Hemisepius", K. Dan. Vidensk. Selsk. Skr. (Naturvidensk. Math. Afd.) 5th ser. 10 (1875): 463–82, and "Sepiadarium og Idiosepius", K. Dan. Vidensk. Selsk. Skr. (Naturvidensk. Math. Afd.) 6th ser. 1 (1880–5): 211–42]. Hectocotylisation has always astonished him.

Wishes JS believed in evolution.

Contributor:
Darwin Correspondence Project