it. April–June April – Hans Christian Ørsted discovers the relationship between electricity and magnetism. April 1 – A proclamation, signed "By order of the Committee of Organisation for forming a Provisional Government", begins the "Radical War" in Scotland. April 8 – The statue of the Venus de Milo (Aphrodite of Milos, c.150 BC-125 BC) is discovered on the Greek island of Milos, by a peasant named Yorgos Kentrotas. April 12 – Alexander Ypsilantis is declared leader of Filiki Eteria, a secret organization to overthrow Ottoman rule over Greece. April 15 – King William I of Württemberg marries his cousin, Pauline Therese, in Stuttgart. May 1 The last judicial decapitation in the United Kingdom is meted out to the principals in the Cato Street conspirators after their public hanging for treason in London (legally, a mitigation of the last sentence in Britain of hanging, drawing and quartering). Robert Owen's Report to the County of Lanark, of a plan for relieving public distress and removing discontent (published 1821) is delivered in Scotland; he is beginning to devise the labour voucher. May 11 – (the ship that will later take young Charles Darwin on his scientific voyage) is launched at Woolwich Dockyard. May 20 – 14-year-old John Stuart Mill sets out on his formative trip to the south of France, staying with Samuel Bentham. June 5 – Caroline of Brunswick, the estranged wife of King George IV of the United Kingdom, returns to England after six years abroad in Italy, where she has been carrying on an affair; since ascending the throne in January, the King has sought to receive his government's approval for a divorce. June 10 – Sir Thomas Munro is appointed as the British colonial Governor of the Madras Presidency, which encompasses most of southern India. June 12 Élie Decazes, leader of the opposition in France's Chamber of Deputies, successfully introduces the "Law of the Double Vote", a proposal to add to the 258 existing legislators by creating 172 seats that would be "selected by special electoral colleges" made up of the wealthiest 25% of voters in each of France's departments. Delegates in St. Louis, Missouri Territory approve a proposed state constitution, proclaiming that they "do mutually agree to form and establish a free and independent republic, by the name of "The State of Missouri".<ref>"Missouri", in Constitutional Documents of the United States of America 1776-1860", ed. by Horst Dippel (K.