Polonaise through the White House receiving line. Sousa wrote it in 1886 at the request of President Chester A. Arthur who died before it was performed. Tchaikovsky's opera "Eugene Onegin", an adaption of Alexander Pushkin's novel in poetry verse, includes a famous polonaise. The polonaise is a Polish dance and is one of the five historic national dances of Poland. The others are the Mazurka (Mazur), Kujawiak, Krakowiak and Oberek, last three being old folk dances. Polonaise originated as a peasant dance known under various names – "chodzony" ("pacer"), "chmielowy" ("hops"), "pieszy" ("walker") or "wielki" ("great"), recorded as early as the
Types of volcanic eruptions Types of volcanic eruptions Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three different types of eruptions. The most well-observed are magmatic eruptions, which involve the decompression of gas within magma that