Letter, 'Regarding the relative periods at which the different families of testaceous animals appear to have been created, and on the gradual approximation which may be observed in our British strata from the fossil remains of the oldest formations, to the living inhabitants of our land and waters' from L W [Lewis Weston] Dillwyn to Sir H [Humphry] Davy

Lewis Weston Dillwyn, Letter, 'Regarding the relative periods at which the different families of testaceous animals appear to have been created, and on the gradual approximation which may be observed in our British strata from the fossil remains of the oldest formations, to the living inhabitants of our land and waters' from L W [Lewis Weston] Dillwyn to Sir H [Humphry] Davy, 01 February 1824, PT/17/12, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/pt_17_12/letter-regarding-the-relative-periods-at-which-the-different-families-of-testaceous-animals-appear-to-have-been-created-and-on-the-gradual-approximation-which-may-be-observed-in-our-british-strata-from-the-fossil-remains-of-the-oldest-formations-to-the-living-inhabitants-of-our-land-and-waters-from-l-w-lewis-weston-dillwyn-to-sir-h-humphry-davy, accessed on 06 February 2026

https://makingscience.royalsociety.org/items/pt_17_12/letter-regarding-the-relative-periods-at-which-the-different-families-of-testaceous-animals-appear-to-have-been-created-and-on-the-gradual-approximation-which-may-be-observed-in-our-british-strata-from-the-fossil-remains-of-the-oldest-formations-to-the-living-inhabitants-of-our-land-and-waters-from-l-w-lewis-weston-dillwyn-to-sir-h-humphry-davy

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