Letters from Adams, Charles Baker to Charles Lyell, 5 December 1845

Summarised as 'Shells of of the Gulf of Champlain - Pleistocene'. Adams writes of his geological report on shells of the Gulf of Champlain, which Adams wishes to appeal not to a geologist, but to a community who do not know there is a structure to the Earth - "intending to form an opinion, constrained by the facts observed". Lists fossils which he has to hand from these deposits. Letter is headed with an illustration of Middlebury College, alongside is a note in pencil that the scene and building only exist on paper.