Editing 1891 (section)

=== April&ndash;June ===
[[File:Tchaikovsky.jpg|thumb|110px|right| [[May 5]]: [[Tchaikovsky]] opens [[Carnegie Hall]]]]
* [[April 1]]
** The [[Wrigley Company]] is founded in Chicago.
** The London–Paris telephone system is opened to the general public.<ref name="Pocket On This Day"/>
* [[April 5]] &ndash; [[Census in the United Kingdom]]: 15.6 million people live in cities of 20,000 or more in [[England and Wales]], and cities of 20,000 or more account for 54% of the total [[English people|English]] population.
* [[April 12]] &ndash; The first official game in the [[Association football]] league of [[Argentina]] ([[1891 Argentine Primera División]]) is held in [[Caballito, Buenos Aires]].<ref>{{cite book|title=Historia del Fútbol Amateur en la Argentina|first=Jorge|last=Iwanczuk|publisher=Autores Editores|year=1992|isbn=9504343848}}</ref>
* [[April 23]] &ndash; [[Chilean Civil War of 1891]]: [[Chilean ironclad Blanco Encalada|Chilean ironclad ''Blanco Encalada'']] is sunk at the [[Battle of Caldera Bay]] by [[torpedo boat]]s.<ref>{{cite web |url=http://www.armada.cl/prontus_armada/site/artic/20090716/pags/20090716194359.html |title=Blanco Encalada, fragata blindada (1º). |publisher=Armada de Chile |access-date=2009-10-27 |language=es |url-status=dead |archive-url=https://web.archive.org/web/20091203093344/http://www.armada.cl/prontus_armada/site/artic/20090716/pags/20090716194359.html |archive-date=3 December 2009 |df=dmy-all }}</ref> This is the first [[ironclad warship]] lost to a self-propelled [[torpedo]].<ref>{{cite book|last=Stem|first=Robert|title=Destroyer Battles: Epics of Naval Close Combat|page=22|publisher=Seaforth Publishing|location=Barnsley|year=2008|isbn=978-1473813564|url=https://books.google.com/books?id=lv_RAwAAQBAJ&q=Almirante+Lynch&pg=PA22}}</ref>
* [[May]] &ndash; [[Mirza Ghulam Ahmad]] claims to be the Promised [[Messiah]] (the second coming of [[Jesus]]) and the [[Mahdi]] awaited in [[Islam]].
* [[May 1]] 
** Troops fire on a workers' [[International Workers' Day|May Day]] demonstration in support of the 8-hour workday in [[Fourmies, Nord|Fourmies]], France, killing 9 and wounding 30.
** The first ''[[Fasci Siciliani|Fascio dei lavoratori]]'' (Workers League) is founded by [[Giuseppe De Felice Giuffrida]] in [[Catania]], [[Sicily]].
* [[May 5]] &ndash; The Music Hall in New York (later known as [[Carnegie Hall]]) has its grand opening and first public performance, with [[Tchaikovsky|Peter Tchaikovsky]] as guest conductor.<ref>{{cite book|title=Stagebill|url=https://books.google.com/books?id=QOy2AAAAIAAJ|year=1985|publisher=B & B Enterprises, Incorporated|page=17}}</ref>
* [[May 11]] &ndash; [[Ōtsu incident]]: [[Tsesarevich]] [[Nicholas II of Russia|Nikolay Alexandrovich]] (the future Czar Nicholas II) of Russia survives an assassination attempt while visiting Japan.
* [[May 15]] &ndash; [[Pope Leo XIII]] issues the encyclical ''[[Rerum novarum]]'', on the rights and duties of capital and labor, resulting in the creation of many [[Christian Democrat]] parties throughout Europe.<ref>{{cite book|author=Pope Leo XIII|title=Rerum Novarum: Encyclical on the Rights and Duties of Capital and Labour|url=https://books.google.com/books?id=jI60PAAACAAJ|orig-year=1891|year=2002|publisher=Catholic Truth Society|isbn=978-1-86082-153-0}}</ref>
* [[May 20]] &ndash; [[Thomas Edison]]'s prototype [[kinetoscope]] is first displayed at Edison's Laboratory, for a convention of the National Federation of Women's Clubs.
* [[May 31]] N.S. ([[May 19]] O.S.) &ndash; In the Kuperovskaya district of [[Vladivostok]], a grand ceremonial inauguration of construction work on the [[Trans-Siberian Railway]] is carried out by the Tsesarevich Nikolay Alexandrovich, and a religious service held.
* [[June]] &ndash; The [[clipper|clipper ship]] [[Cromdale (clipper)|Cromdale]] is completed. She is the last fully rigged ship built for the Australian [[Wool|wool trade]].
* [[June 1]] &ndash; The [[Johnstown Inclined Plane]] opens in [[Johnstown, Pennsylvania]].
* [[June 15]] &ndash; [[Minas Gerais]] was granted in 1891.
* [[June 21]] &ndash; The first long-distance transmission of [[alternating current]] is made, from the Ames power plant near [[Telluride, Colorado]], by Lucien and Paul Nunn.
* [[June 25]] &ndash; [[Arthur Conan Doyle]]'s detective [[Sherlock Holmes]] appears in ''[[The Strand Magazine]]'' (London) for the first time, in the issue dated July.<ref name="Pocket On This Day"/>
[[File:Kinetoscope.jpg|thumb|110px|right| [[May 20]]: [[Thomas Alva Edison|Edison]]'s [[kinetoscope]].]]