First attempt to manufacture graphite drawing sticks from powdered graphite (mixed with sulphur and antimony), in Nuremberg, Germany.
Physics
Robert Boyle publishes Boyle's law, in the second edition of his New Experiments Physico-Mechanicall, Touching The Spring of the Air, and its Effects (Oxford).[1]
Statistics
John Graunt, in one of the earliest uses of statistics, publishes information about births and deaths in London.