Jul 13 John F Loudon discovers tin on East Indian Island of Billiton Jul 23 Treaty of Traverse des Sioux signed by Sioux Indians and US Light and Air For All – With No Charge! Jul 24 The long hated Window Tax is abolished in the United Kingdom Even larger houses had their windows bricked up to avoid tax Jul 28 Total solar eclipse captured on a daguerreotype photograph Jul 29 Annibale de Gasparis discovers asteroid 15 Eunomia 1850 Historical Events by Year 1852