Thanks CSB for drawings of [cirripede] larva and for permission to cite unpublished paper ["On the development of the cirripedes", Ann.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.

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

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

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

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.

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

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.

Suggests that JD consult with Edward Forbes about dredging.

Delighted he will look for fossil bones.

Asks him to look for Australian cirripedes.

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.

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.

Has received the elements of Irene from J. F. Encke, which places the planet near Egeria. Eduard Heis has asked for JH's address as he has prepared a paper on variable stars.

Still more on the pension for Mary Maclear [see HP's 1851-2-19].

Assurance that JH's lack of response is due not to discourtesy but to lack of information.

Mint must resume gold coinage and needs to take possession of Moneyers' equipment quickly. This will relieve Moneyers of additional responsibility.

Gratefully returns [Michel] Chevalier's work, which contained numerical data that JH sought.

Henry Bingley wants coach house and stables owned by Bingley's father, who occupied position of King's Assayer before Bingley. Bingley's private assaying practice for Bank of England. Distribution of gold bullion by Bank of England.

Calculates salary budget for Jasper Atkinson, Edward Enfield, and Robert Rintoul.

Delays decision over assigning Henry Bingley as Chief Coiner.

Compensation for Henry Bingley [former Sovereign's Assay Master whose office was recently terminated]. Bingley refused offers of £500 and £750.