Last and First Men, by Olaf Stapledon
http://en.wikipedia.org/wiki/Last_and_First_Men
Last and First Men: A Story of the Near and Far Future is a science fiction novel written in 1930 by the British author Olaf Stapledon. A work of unprecedented scale in the genre, it describes the history of humanity from the present onwards across two billion years and eighteen distinct human species..........
