Collection of recent cirripedes received. The fossil cirripedes have been returned.

Thanks for cirripede specimens. Describes progress [on Living Cirripedia].

Mentions his account. Reduction in rent paid by Mr Hardy.

Thanks for cast and account of cirripede [Chelonobia caretta] burrowing in turtle shell. Believes base of cirripede absorbed by bone below.

Asks whether he can borrow from Joshua Alder an article [Sven Ludvig Lovén, "Ny art af Cirripedia Alepas squalicola", Ofers. Kongl. Vetensk. Acad. Förh. 1 (1844): 192–4] in order to have the plate copied. Asks to borrow additional specimen of Ibla.

Asks for reference to article by Kölliker, ["Some observations on the structure of two new species of Hectocotyle", Trans. Linn. Soc. Lond. 22 (1851): 9–22]. Asks for information.

Thanks CSB for drawings of [cirripede] larva and for permission to cite unpublished paper ["On the development of the cirripedes", Ann. & Mag. Nat. Hist. 2d ser. 8 (1851): 324–32]. Describes method of preserving specimens. Mentions Balanus common on tidal rocks at Tenby.

Suggests that JD consult with Edward Forbes about dredging.

Delighted he will look for fossil bones.

Asks him to look for Australian cirripedes.

Thanks for note of 13 May and tracings of the "curious Bopyrid".

Is astonished at amount of work JDD does and frightened it will cause ill-health, such as CD has experienced.

Thanks AH for assistance and Joshua Alder for his kindness. Ibla specimens offered would not aid him.

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

Discusses the Jura blocks.

Asks to borrow woodcut from Palaeontographical Society for use in Living Cirripedia, vol. 1.

Inquires about the nature of some money recently paid to him.

Thanks for report [on echinoderms, Ann. & Mag. Nat. Hist. 2d ser. 8 (1851): 1–19]. Wanted to learn about metamorphosis of the class. Agrees with THH’s distinction between individuals and zooids, but thinks zooids will never cease to be called individuals.

Finds he needs four woodcuts for the introduction [to vol. 1 of Living Cirripedia], which calls for quick action. Will send entire MS by the end of the month.

Will bring MS [of vol. 1 of Living Cirripedia] on the last day of July, and proofs of the eight plates now engraved will be sent soon. CD has failed to get materials for the one coloured plate he wanted, so none will be in colour. There will be ten altogether. He will ask later whether he must pay for the extra one. G. B. Sowerby Jr comes next day to complete drawings for two not yet engraved.

Asks to borrow an old pair of GN’s dissecting scissors so that Weiss & Co. can use it as a model.

Health has been poor.

Has finished MS on pedunculated cirripedes for Ray Society [Living Cirripedia, vol. 1 (1851)].

Asks EL whether he should use both Latin and English descriptions of specific characters [in vol. 1 of Living Cirripedia].

Sends completed MS [vol. 1 of Living Cirripedia] with instructions for the printers; reviews number of plates and woodcuts, and offers to pay for extras and for excess corrections, if they occur. Hopes the Council [of the Ray Society] will print his second volume at the end of the ensuing year.