Nylon toothbrush bristles were first produced in the US - the first commercial use of nylon 

Malcolm Campbell beat his own land speed record in Bluebird at Daytona Beach, US he reached a speed of 40888 kph/25396 mph 

The Simplon Tunnel through the Alps was completed 

Simplon tunnel in Switzerland completed 

US signs agreement acquiring a naval station at Guantanamo Bay Cuba 

Henry Cavendish, English physicist, dies 

The Gregorian Calendar was introduced by Pope Gregory XIII it replaced the Julian Calendar, but was not adopted in Britain until 1752