To J. S. Henslow 2 September [1854]1
Down. Farnborough | Kent.
Sept. 2d
My dear Henslow.
I have nothing to correct except that Bal. tintinnabulum cannot strictly be considered British, (being only an imported shell) except as a Crag Fossil.— I hardly know what to add as strictly British & living & breeding, perhaps Bal. porcatus would do as well as possible.— I may just mention, that in selecting these types I took the Pollicipes as giving all the characters of the whole order as well balanced as possible; but in the smaller groups I have picked out one eminently well characterized, or with every character by which the group is different from the other groups, most strongly pronounced.— I had thought the paper was only for the Ipswich Museum2 (though I cannot improve on it as it stands) & therefore I did not notice the two other Orders represented only by a single species each.3 I have inserted these in pencil, & you can determine whether to insert them in print; undoubtedly they ought to be, in order to give a full illustration of the Sub-class.—
Of the sub-class, including the three orders, it is impossible to give a type. I am sorry to have caused so much trouble, but I thought the paper was solely to guide you in your classification of the Ipswich Museum, & as you had not the two last orders, I purposely omitted all notice of them
Yours most truly | C. Darwin
Footnotes
Bibliography
Living Cirripedia (1854): A monograph of the sub-class Cirripedia, with figures of all the species. The Balanidæ (or sessile cirripedes); the Verrucidæ, etc. By Charles Darwin. London: Ray Society. 1854.
Summary
Sends his comments on JSH’s MS on cirripedes ["On typical objects in natural history", Rep. BAAS (1855): 108–26].
Letter details
- Letter no.
- DCP-LETT-1586
- From
- Charles Robert Darwin
- To
- John Stevens Henslow
- Sent from
- Down
- Source of text
- California State Library, San Francisco, Sutro Library (Crocker collection: folder #11)
- Physical description
- ALS 4pp
Please cite as
Darwin Correspondence Project, “Letter no. 1586,” accessed on 23 April 2024, https://www.darwinproject.ac.uk/letter/?docId=letters/DCP-LETT-1586.xml
Also published in The Correspondence of Charles Darwin, vol. 5