In this decade, an astronomer in Bologna (“bo-LOH-nyah”) dubbed “the mad Italian prophet” unsuccessfully predicted that the world would end on July 18th. In this decade, protesters in Ely (“EE-lee”) and Littleport rioted over high grain prices. A lack of horses in this decade may have inspired the invention of the velocipede by Karl Drais (“DRICE”). This decade is the focus of the book When the Mississippi Ran Backwards. In this decade, the Maison Chapuis (“may-ZOH shah-PWEE”) and the Villa Diodati on Lake Geneva were rented by a group that read the collection (10[1])Fantasmagoriana for entertainment in bad weather. In this decade, Honoré Flaugergues (“oh-no-RAY flow-JAIRG”) discovered a comet with the second-longest recorded period of visibility, behind the Hale-Bopp Comet. The New Madrid earthquakes occurred in this decade, which included the “Year Without A Summer.” For 10 points, name this decade when a cold winter hampered Napoleon’s invasion of Russia. ■END■