page_title: 1840
section_title: July–September
hierarchical_section_title: 1840 / Events / July–September
caption_attribution_description: RMS Britannia (1840) Built by: Robert Duncan, Cartsdyke Launch Date: 5.2.1840 Date of completion: 6.1840 Tons: 1156 1849 Renamed: BARBAROSSA 1880 Broken up in Kiel
context_page_description: 1840 was a leap year starting on Wednesday of the Gregorian calendar and a leap year starting on Monday of the Julian calendar, the 1840th year of the Common Era and Anno Domini designations, the 840th year of the 2nd millennium, the 40th year of the 19th century, and the 1st year of the 1840s decade. As of the start of 1840, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.
context_section_description: July 4 – The Cunard Line's 700-ton wooden paddlewheel steamer RMS Britannia departs from Liverpool, bound for Halifax, Nova Scotia, on the first steam transatlantic passenger mail service.
  July 15 – The Austrian Empire, the United Kingdom, the Kingdom of Prussia, and the Russian Empire sign the Convention of London with the Sublime Porte, ruler of the Ottoman Empire.
  July 21 – August Borsig's steam locomotive, the first built in Germany, competes against a Stephenson-built locomotive on the Berlin–Jüterbog railroad; the Borsig locomotive wins by 10 minutes.
  July 23
  Pedro II is declared "of age" prematurely, and begins to reassert central control in Brazil.
  The Province of Canada is created by the Act of Union.
  August 10 – Fortsas hoax: A number of book collectors gather in Binche, Belgium, to attend a non-existent book auction of the late Count of Fortsas.
  September 10 – Ottoman and British troops bombard Beirut, and land troops on the coast, to pressure Egyptian Muhammad Ali to retreat from the country.
  September 16 – Joseph Strutt hands over the deeds and papers concerning the Derby Arboretum, which is to become England's first public park.
  September 30 – The frigate Belle-Poule arrives in Cherbourg, bringing back the remains of Napoleon from Saint Helena to France.
caption: July 4: RMS Britannia
exif: {}