• A whirlwind lasting under two minutes demolished three spinning-mills in the Monville valley near Rouen, killing at least 40 workers and wounding nearly 100 out of roughly 370 who were on shift; surgeon Achille-Cléophas Flaubert led emergency medical relief.
• Spain's Heraldo republished an 1827 despatch by minister Calomarde to Ferdinand VII asserting the Crown's absolute right to block papal rescripts — deployed now to justify resisting Rome's current pretensions.
• Queen Victoria arrived at Mainz aboard the royal yacht Fairy, was received by Prince William of Prussia, and reviewed 9,000 Austrian and Prussian troops — her first ever sight of Imperial Austrian soldiers.

• Fifteen journeyman carpenters stood trial in Paris for a coalition that on 9 June emptied building-yards across the Seine département; they had demanded a minimum 5-franc day, a ten-year binding agreement, and abolition of piece-work.
• Toudic and Autain, shackled convicts at Nantes prison, sawed off their irons, tunnelled six hours through the city's sewers guided by Toudic's memory of building the drains — only to surface and surrender when rising tidal water and waiting sentries blocked every exit.

• Professor Charles Morren of Liège identified the potato blight as a Botrytis fungus spreading via microscopic spores, and issued ten precise counter-measures including burning infected haulm, lime-washing cellars, and importing seed-potatoes from Pennsylvania or Ireland.

Music

• Reviewer in Milan's Gazzetta Musicale reported that Rubini applauded Spanish tenor Pietro de Unanue 'to the point of breaking his hands' at a Bergamo performance of Donizetti's Gemma di Vergy.

• The Comédie-Française won a provisional judgment of 6,000 francs against actress Mlle Sylvanie Plessy, on account of 200,000 francs in damages claimed for her breach of contract — with no advocate appearing on her behalf.