Summary

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

Suggests he examine cementing apparatus of Balanus.

Summary

Sends enclosure [unspecified].

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

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

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

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

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

Absence of anus in Brachiopoda and Alcippe cirripedes.

Summary

On the Fraser’s Magazine review by Hopkins [see 2860] and the Quarterly Review article by Wilberforce ["Darwin’s Origin of species", 108 (1860): 225–64]. The course of opinion since Oxford BAAS meeting. Asa Gray.

Need for Natural History Review, but fears it will be a burden for THH and lessen his original work. His own problem with work: if he had other duties he would be able to do absolutely nothing in science.

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

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

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

Grateful for Siebold’s wonderful facts [C. T. E. von Siebold, On a true parthenogenesis in moths and bees (1856), trans. by W. S. Dallas (1857)].

Vitality of spermatozoa.

Hybridisation of bees. Bees are in one respect his greatest theoretical difficulty.

CD still convinced about the relation of cement receptacles and ovarian tubes [in Crustacea].

Birth of C. W. Darwin.

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

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

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

Thomas Bell thinks John Lindley superior for Royal Society Medal. CD agrees, but demurs at Medal going to same branch of science two years in succession.

Perplexed about Albany Hancock’s qualifications compared with J. O. Westwood’s.

Death of H. De la Beche.