Arulo is an ido of Esperanto which was created by Max Talmey in 1925. As a result of being a descendant of Esperanto, the language is a posteriori and an Auxlang. A book, Arulo, text book of the universal language, with exercises was published by the author in 1925 (see the second link below). No further information is available for this language on the internet.
- Arulo at LangMaker (archived)
- The book which contains Arulo (do a text search for Arulo. archived link provided for stability)