Letter to Sir Archibald Geikie from Henry William Bristow thanking him for his gift of a copy of his work Life of Sir Roderick I. Murchison, Bart. : based on his journals and letters with notices of his scientific contemporaries and a sketch of the rise and growth of Palaeozoic geology in Britain, ( 1875) . He hopes that the publication will not reopen the historical controversy between Sir Roderick Impey Murchison and Adam Sedgwick.