Jagić published papers about phonological, grammatical and syntactical structure of all Slavic languages, descriptions of ancient Slavic literary monuments, oral literary tradition, culture, mythology, bibliographies and other texts. He decided on German as the language of the journal which sparked a backlash in Slavic countries, but it was due to this decision that the journal became a mediator between the Slavic and Western European science and Slavic studies reached the level of Germanic and Romance studies.
