Has read CHS’s paper, "Original population of America" [Edinburgh New Philos. J. 38 (1844–5): 1–20], and is eager to know reference for the account of a "ruined city in the Caroline Group", indicating that the land has subsided. Refers to his own subsidence hypothesis in his work [Coral reefs].

Thanks for his three invaluable letters. His own grandfather put up the first steam engine in London in 1770. His own knowledge is limited but he is expert on some things. Hopes he will keep his letter for a year.