counties of Devon and Cornwall in England. May 5 – Border Treaty between Brazil and Venezuela: The two countries agree their borders should be traced at the water divide, between the Amazon and the Orinoco basins. May 22 – Ferdinand II of the Two Sicilies is succeeded by his 23-year-old son, Francis II of the Two Sicilies. May 26 – Austro-Sardinian War – Battle of Varese: Giuseppe Garibaldi's Hunters of the Alps confront and defeat Austrian forces, led by Field Marshal-Lieutenant Carl Baron Urban. May 26, June 2 – Geologist Joseph Prestwich and amateur archaeologist John Evans report (to the Royal Society and Society of Antiquaries of London, respectively) the results of their investigations of gravel-pits in the Somme valley and elsewhere, extending human history back to what will become known as the Paleolithic Era. May 30 – Battle of Palestro: The Sardinians defeat the Austrian army. May 31 – Big Ben, the Great Clock at the Palace of Westminster, London, is started. June 4 – Austro-Sardinian War – Battle of Magenta: The French and Sardinians defeat the Austrians. June 6 – The British Crown colony of Queensland in Australia is created, by devolving part of the territory of New South Wales (Queensland Day). June 8 – The discovery of the Comstock Lode in the western Utah Territory sets off the Rush to Washoe. June 15 – The so-called Pig War border dispute between the Americans and the British, over the San Juan Islands, begins by the death of the namesake pig. June 17 – The only recorded simoom ever in North America hits Goleta and Santa Barbara, California. June 18 – Aletschhorn, the second summit of the Bernese Alps, is first ascended. June 24 – Battle of Solferino: The Kingdom of Sardinia and the armies of Napoleon III of France defeat Franz Joseph I of Austria in northern Italy; the battle inspires Henri Dunant to found the Red Cross. June 30 – Charles Blondin crosses Niagara Falls on a tightrope for the first time. July–September July Count Camillo Benso di Cavour resigns, as president of Piedmont-Sardinia. Pike's Peak Gold Rush begins in the Colorado Territory. July 1 – The first intercollegiate baseball game is played, between Amherst and Williams Colleges. July 8 – Charles XV succeeds his father Oscar I of Sweden and Norway (as Charles IV). July 11 The chimes of Big Ben ring for the first time