Darwin regularly contacted and visited the British Museum Library reading room (see https://archive.is/ux1kP) prior to plagiarising the theory of evolution by natural selection from Matthew's (1831) On Naval Timber and Arboriculture (NTA).
The Library of the British Museum held a copy of NTA in 1833. https://www.google.co.uk/books/edition/Annual_List_Of_Donations_And_Bequests_To/FN5lAAAAcAAJ?hl=en&gbpv=1&dq=matthew+naval+timber+arboriculture&pg=PA75&printsec=frontcover
