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
Orgelbrand's Universal Encyclopedia (1859) the first edition of the years (1872-1876, 1877-1879, 1883-1884, 1898-1904) had a volume-reduced form. In 1984-1985, a reprint of the original version was published in Poland. The creators of the publication's content were many representatives of the Polish nineteenth-century intelligentsia. In entry to the first volume published in 1859, a list of authors of the encyclopedia has been published. It contained the following names: Adam Adamowicz, Jerzy Alexandrowicz, Władysław Ludwik Anczyc, Michał Baliński, Jan Baranowski, Sadok Barącz, Adam Bartoszewicz, Julian Bartoszewicz, Władysław Bentkowski, Feliks Berdau, Leopold Berkiewicz, Cezary Biernacki, Julian Bleszyński, Kazimierz Bujnicki, Ignacy Chodźko, Teofil Cichocki, Wojciech Cybulski, Wincenty