Interlinguistics of interlinguistics are, however, not so constructive, but rather descriptive, comparative, historic, sociolinguistic, or concerned with translation by humans or machines. As for Esperanto, which is the most widely used constructed interlanguage, there is a relatively abundant literature about the language itself and its philology (see Esperantology). Only a few of the many constructed languages have been applied practically to any noteworthy extent. The most prosperous were Volapük (1879, Johann Martin Schleyer), Esperanto (1887 Ludwik Lejzer Zamenhof), Latino sine flexione (1903, Giuseppe Peano), Ido (1907, Louis Couturat), Occidental-Interlingue (1922, Edgar de Wahl) and Interlingua (1951, IALA and Alexander Gode), with
Ludwik Finkel Mościcki. Ludwik Finkel was buried in the Łyczakowski Cemetery. Ludwik Finkel Ludwik Finkel (born 20 March 1858 in Bursztyn, d. 24 October 1930 in Lwów) was a Polish historian, and rector of the Lviv University. From 1878 to 1881 he studied history, philosophy and history of literature at the Lwów University under the tutelage Aleksander Hirschberg, Julian Ochorowicz and Roman Pilat. His master was Ksawery Liske. Good friend of Finkel was Stanisław Lukas. In 1882 he gained a PhD. Topic of his thesis was "Marcin Kromer, historyk polski XVI wieku" (Marcin Kromer, a Polish historian of 16th century). Among his