Rest your drink on this coaster and ponder the theory of evolution or just what you are going to have for tea the coaster is printed with british naturalist charles darwinrsquos tree of life illustration sparking his ground breaking theories on evolution and natural selection darwin made the original sketch in a notebook in 1837 after a 5 year world trip aboard hms beagle 1831 6 the coaster has been produced exclusively for english heritage as part of our down house souvenir