G. Saur, 2007) p221</ref> June 29 – The cause of action that will lead to the U.S. Supreme Court case known simply as The Antelope arises, when a U.S. Treasury cutter captures a ship of the same name, which is transporting 281 Africans who had been captured as slaves, in violation of the 1808 U.S. law prohibiting the slave trade. July–September July 13 – A revolt under Guglielmo Pepe forces Ferdinand I of the Two Sicilies to sign a constitution modeled on the Spanish Constitution of 1812. July 20 – Saint Cronan's Boys' National School opens in Bray, Co. Wicklow, Ireland under the title Bray Male School. It is the oldest school in Bray, and its notable pupils will include President of Ireland Cearbhall Ó Dálaigh. July 26 – Union Chain Bridge, a wrought iron suspension bridge designed by Captain Samuel Brown, opens across the River Tweed, between England and Scotland. Its span of 449 ft (137 m) is the world's longest for a vehicular bridge at this time. July 31 – A fire breaks out in the wine depot at the Bercy section of Paris. It is reported later that "In the absence of water to supply the engines, an attempt was made to extinguish the flames with wine— of which a lake of 50 ft. square and more than a foot deep was formed; but the fire continued to rage, as well it might, being supplied by alcohol, and great destruction of property resulted. August 1 — Completion and opening of the Regent's Canal through to the London Docks. August 24 – A Constitutionalist insurrection breaks out at Oporto, Portugal. September 2 – The Daoguang Emperor succeeds to the throne of Qing dynasty China. September 5 – José Gervasio Artigas flees to Paraguay. September 15 – Revolution breaks out in Lisbon against John VI of Portugal. October–December October 9 – Guayaquil declares independence from Spain. October 25–November 20 – The Congress of Troppau (Opava) is convened between the rulers of Russia, Austria and Prussia. November 17 – American seal hunter Captain Nathaniel Palmer becomes the third person to see Antarctica. (The Palmer Peninsula is later named after him.) November 20 – After the sinking of the American whaleship Essex of Nantucket, by a sperm whale in the southern Pacific Ocean, the survivors are left afloat in three small whaleboats. They eventually resort, by common consent, to cannibalism to