Summary

Second Living Cirripedia volume published. Asks THH’s advice on presentation copies for continental naturalists.

THH’s review of Vestiges of creation in [Br. & Foreign Med.-Chir. Rev. 13 (1854)]. CD is almost as unorthodox on species as the author of Vestiges, but hopes not quite so unphilosophical.

Hopes L. Agassiz was sounder on embryological stages than THH thinks.

Summary

Thanks for help on presentation copies of Living Cirripedia, vol. 2.

Suggests he examine cementing apparatus of Balanus.

Summary

Agrees with THH on metamorphosis of branchiae of Balanus, and on his view of Owen.

Summary

Sends specimens of sessile cirripedes for corroboration of their cementing apparatus.

Absence of anus in Brachiopoda and Alcippe cirripedes.

Summary

Thanks THH for corroborating his observations. Discusses metamorphosis of ovaria to cement organs. Ovaries, germinal vesicles, and anatomy of cirripedes. Difficulties of classification, and observation.

THH’s article on Mollusca [Charles Knight, ed., English cyclopædia: a new dictionary of universal knowledge (1854–70) 3: 855–74].

Summary

Congratulations [on Mrs H’s delivery].

Balanus balanoides positively identified by CD.

Summary

Sends enclosure [unspecified].

Reminds THH to mention [German] translation [of Origin] when he writes to R. A. von Kölliker.

Summary

Responds to THH’s questioning of his observations on cirripede anatomy with extensive discussion of what he observed. Admits his elementary knowledge of microscopical structures but seriously doubts he has erred. Cement glands, ovarian tubes, etc.

Summary

Owen on the branchiae of Balanidae.

The Edinburgh Review article on the Origin [by Owen, 111 (1860): 487–532] full of misrepresentations, with a brutal attack on THH.

Summary

On THH’s paper on cephalous Mollusca [Philos. Trans. R. Soc. Lond. 143 (1853) pt 1: 29–66]. Discovery of the type or "idea" (in THH’s sense, not Owen’s or Agassiz’s) is one of the highest ends of natural history.

Discusses anamorphism;

position of heart in Cleodora.

Variability within species;

cementing process in cirripedes.

Summary

Thinks J. O. Westwood deserves Royal Society’s Gold Medal. Asks THH’s opinion of his nomination. Lyell deserves Copley Medal, but, since he has Royal Medal, it may be objectionable to propose him.

Summary

Proposes to send THH vol. 1 of Living Cirripedia.

Summary

Offers to send Ascidia specimens of Beagle voyage. Describes some of them.

Hopes THH will review his book [Living Cirripedia, vol. 1] which has been published for a year with no notice taken of it except briefly by Dana.

Discusses Limulus-like larva. "I have become a man of one idea.– cirripedes morning & night."

Summary

Glad THH has taken up aphid question versus Owen ["On the agamic reproduction and morphology of Aphis", Trans. Linn. Soc. Lond. 22 (1858): 193–236].

Fertilisation and inheritance discussed. Speculates that fertilisation may be a mixture rather than a fusion. Can understand in no other way why crossed forms tend to go back to ancestral forms.

Summary

Sends suggestions for observations on glacial phenomena that might be made on the [Polar] expedition [of H. M. S. Alert and Discovery, 1875–6].

Summary

It seems improper that his advances to G. B. Sowerby Jr for payment of engravings should not have been mentioned to Council of Ray Society. His appreciation of the Society.

Summary

On success of THH’s Edinburgh lectures.

Agrees that THH is right that the hybrid question is a "hiatus" [in the argument for natural selection] but he overrates it. Crossed varieties frequently produce sterile offspring. On this question asks THH to read his Primula paper [Collected papers 2: 45–63]. CD suspects sterility will come to be viewed as a selected character.

Summary

Delighted with Times review [26 Dec 1859]. Puzzled by author, suspects THH, but publication in Times makes it unlikely. Sorry for Owen.

Summary

Approves drawing. No one who cannot draw should attempt to be a naturalist. Suggests corrections to [Lepas?] drawing. Comments on position of ganglia, cement glands, and stomach.

Summary

Asks for information on geographical distribution of ascidians; are any closely allied species or genera found in north and south temperate zones that do not have representatives in the tropics?

Answers some questions on [cirripede] antennae.

If THH ever sees a tree washed ashore, will he observe whether any earth is embedded between roots?