Summary

Development of aphids; apparent absence of vermiform stage.

Summary

Thanks CSB for cirripede larvae.

Has been unwell.

Cannot see transverse articulation referred to and does not believe in it.

Sends species synonyms.

Discussion of Chthamalinae.

Suggests using asphalt to seal specimen containers.

Comments on mouth of larva.

Summary

Sends presentation copy of Fossil Cirripedia.

Summary

Thanks for Lythrum paper [Collected papers 2: 106–31].

T. S. Cobbold’s book on the Entozoa [1864].

Remarks on development of the tapeworm.

Summary

Comments about questionnaire CD completed for FG [for Galton’s English men of science (1874)].

Describes his early interest in collecting and his education.

Asks about determining the mean heights of two groups of men.

Summary

Seeks permission from the Trustees of the British Museum to borrow the cirripede specimens in the public collection. Explains his intention to produce a monograph of the Cirripedia.

Summary

Thanks JSH for his address [Address delivered in the Ipswich Museum on 9th March 1848]. Questions a sentence which implies that only the practical use of a scientific discovery makes it worth while. The instinct for truth justifies science without any practical results. Cites his work on cirripedes.

Summary

Asks to re-examine specimen of Scalpellum. Discusses publication [of Fossil Cirripedia] by Palaeontographical Society.

Summary

The priority rule has only diverted vanity to a rush to be first. Has no objection to CD’s suggestion that good books be quoted in preference to first descriptions if there is a chance by this means of developing this silly vanity into ambition to advance knowledge. Still, this must not affect the rule of priority. Responds to CD’s four cases.

Summary

Sets out estimate for cutting blocks for illustrations of a trap.

Summary

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

Summary

Encloses a sketch of the principal events in his life [for RH’s memoir on CD in Walford, ed., Portraits of men of eminence (1863–7)].

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

Asks for reference to publication about Xenobalanus.

Summary

CD has been elected an Honorary Member of the Society.

Summary

CD is pleased [about need for a new edition of Origin] but even more grieved – for it will delay his next book [Variation]. Progress of natural history will make many changes necessary in Origin. Nevertheless, proceeds with 32 more woodcuts for Variation.

Summary

Asks JCR to collect cirripedes for him on forthcoming expedition [to the Arctic in search of Sir John Franklin].

Summary

Clarifies the notion and use of type-species and applies it to CD’s problem with Conchoderma.

Summary

Gratified by JDD’s opinion of his work.

Discusses problem of homologies of cirripede larva in first stage and reasons for his view.

JDD’s information on corals was just what CD needed.

Would like specimen of blind cave rat described by B. Silliman [Jr] ["On the Mammoth Cave of Kentucky", Am. J. Sci. 2d ser. 11 (1851): 336] for Waterhouse to examine.

Discusses origin of Australian valleys; he disagrees with JDD’s river-erosion hypothesis.

Summary

Thanks JDD for information.

Discusses Acasta sporillus.

Comments on review of first volume of Living Cirripedia [Am. J. Sci. 2d ser. 14 (1852): 125–7].

Asks JDD to examine Lerneidae.

Will read with interest the geographical discussion of Crustacea when JDD’s volume [Crustacea (1852–5)] appears. John Lubbock will purchase a copy.

Discusses error in Living Cirripedia.