Thanks the Trustees of the British Museum for entrusting to him the collection of Cirripedia and allowing him to disarticulate one specimen of each species.

Discusses loan of cirripede specimens from the British Museum and problems of classification. Encloses a note of thanks to be laid before the Trustees [see 1153].

Mentions returning borrowed book by Camillo Ranzani.

Discusses loan of cirripede specimens from British Museum. "In truth never will a mountain in labour have brought forth such a mouse as my book on the Cirripedia. It is ridiculous the time each species takes me."

Is sorry that any person has misunderstood his intentions. JEG read his papers on cirripedes at the Zoological Society without intending to interfere with CD’s work; he merely wished to record his old observations, made before CD commenced his study, and thought that by so doing he was helping CD. [See "Description of a new species of Anatifa" and "On Thaliella", Proc. Zool. Soc. Lond. (1848): 44.]

It had been suggested to CD that JEG intended to anticipate some of his work on the Cirripedia. CD doubted this because JEG had suggested that CD commence the work and has assisted throughout; however, CD sought assurances regarding JEG’s intentions as he wished that "what little novelty there yet remained in the subject, should be the reward of my work". CD apologises for having spoken to JEG on the subject and will communicate JEG’s assurances to those who had expressed their opinions regarding JEG’s intentions.