Looks forward to the paper on CD’s edible fungus specimen from Tierra del Fuego [read 16 Mar 1841; Trans. Linn. Soc. Lond. 19 (1845): 37–43].
Sends a correction: Fagus betuloides, not F. antarctica, is the common tree of Tierra del Fuego.
Discusses the role of ice in determining the geological features of the Jura. Mentions view of Agassiz. Objects to idea of "a [sea of ice] carrying rocks". Notes Agassiz’s earlier view of "ice expanded in the line of the Great Swiss Valley". Comments on Pentlands.
Has enjoyed reading LA’s book [Études sur les glaciers (1840)].
Hopes LA will pardon manner in which CD has alluded to his work on glaciers in his Journal of researches, of which he sends a copy.
Defends his theory [in "Parallel roads of Glen Roy" (1839), Collected papers 1: 87–137] against the view that the "roads" were formed by glacial action.
Discusses at length Louis Agassiz’s book [Études sur les glaciers (1840)] and Agassiz’s explanation of moraines. Defends his own theory of the importance of floating ice. Relates glacier theory to his own interpretation of Glen Roy.
Mentions a paper he is writing on South American boulders and till [Collected papers 1: 145–63].
The Smith, Elder & Co. account for the now published fifth number of the third part of the Zoology is presented.
LJ has had a letter from R. T. Lowe in Madeira who thinks Scorpaena histrio, a species from Galapagos described in no. 1 [of Fish], is the same as the one in the Atlantic and Mediterranean. LJ does not think it is possible.
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Apologises that JSH has not been able to see fossil spike in London, potentially a large Lycopodium, because it cannot be transported due to fragility. Provides a description and drawing of it.
Discusses fossil trees found in his local area and specimens sent to the Geological Society and Robert Brown, together with a paper Bowman has written on them. States that he has found proof of the solid and subsequently hollowed state of the trees from corresponding bands of soft shale. Provides JSH with a brief description and says full details will be given when whole paper is published. States that they give decisive proof of growth where they were found, that they have overturned the scepticism of geologists including John Phillips and Louis Agassiz, and that a miniature model is being made of them.
Discusses illustrations of the internal structure of Sigillaria by Alexandre Brongniart and his wish to see them when published. Also discusses previous drawings of Sigillaria with leaves by Brongniart and W. Conway. Passes on message from Conway for Fossil Flora to send someone to do drawings of Bristol fossil collection.
Has just received the enclosed communication from Sir Hilgrove Turner, lately Governor of Bermuda. Believes JH is the only person who can deal with it.
Her brother has sent JH's letter and she will be only too pleased to send her poems for whatever purpose he requires them.
Has been confined to the house and only goes out in a wheelchair. Would JH like the bust of Sir Joseph Banks?
Came back from Zwartland for a day, but returns tomorrow. Relates news of the measuring of the base line. Visited magnetic observatory; work in Zwartland not yet complete. Magnetic Observatory satisfactory despite slow construction. No news of the obelisk yet.