Timeline September 1869

Events in September 1869 1

• 1779 – 1869 Peter Mark Roget (1779-1869) Died 12 September 1869, aged 90 Peter Mark Roget was a British physician and scholar best known for compiling "Roget's Thesaurus," first published in 1852. A polymath, he also contributed to physiology and devised an early form of the slide rule. His thesaurus remains in print and in use more than a century and a half later.