miners are ambushed and murdered in Hells Canyon, Oregon, United States. June 8 – Herman Hollerith receives a U.S. patent for his punched card calculator. June 18 – The Reinsurance Treaty is closed between Germany and Russia. June 21 The British Empire celebrates Queen Victoria's Golden Jubilee, marking the 50th year of her reign. Zululand becomes a British colony. June 23 – The Rocky Mountains Park Act becomes law in Canada, creating that nation's first national park, Banff National Park. June 28 – Minot, North Dakota, is incorporated as a city. June 29 – The United Retail Federation is established in Brisbane, Australia. July–September July – James Blyth operates the first working wind turbine at Marykirk, Scotland. July 1 – Construction of the iron structure of the Eiffel Tower starts in Paris, France. July 6 – King Kalākaua of Hawai'i is forced by anti-monarchists to sign the 'Bayonet Constitution', stripping the Hawaiian monarchy of much of its authority, as well as disenfranchising most native Hawaiians, all Asians and the poor. July 12 – Odense Boldklub, the Danish football team, is founded as the Odense Cricket Club. July 19 – Dorr Eugene Felt receives the first U.S. patent for his comptometer. July 26 L. L. Zamenhof publishes "Unua Libro" (Dr. Esperanto's International Language), the first description of Esperanto, the constructed international auxiliary language. Blackpool F.C. is created in England, U.K. August – The earliest constituent of the U.S. National Institutes of Health is established at the Marine Hospital, Staten Island, as the Laboratory of Hygiene. August 8 – Antonio Guzmán Blanco ends his term as President of Venezuela. August 13 – Hibernian F.C. of Scotland defeats Preston North End F.C. of England to win the 'Championship of the World', after the two teams win the Association football Cup competitions in their respective countries. September 5 – The Theatre Royal, Exeter, England, burns down, killing 186 people. September 28 – The 1887 Yellow River flood begins in China, killing 900,000 to 2,000,000 people. October–December October 1 – The British Empire takes over Balochistan. October 3 – Florida A&M University opens its doors in Tallahassee, Florida. October 12 – Yamaha Corporation, the global musical instrument and audiovisual brand, is founded as Yamaha Organ Manufacturing in Hamamatsu, Japan. November Results of the Michelson–Morley experiment are published, indicating that the speed of light is independent of motion. Arthur Conan Doyle's detective character Sherlock Holmes makes