Mahler's use of recurring thematic and motivic elements is the topic under consideration in this paper. The subject was decided upon after a preliminary investigation into possible instances of the use of leitmotiv in Mahler's Symphony JI led to the conclusion that occurrences of that device are, at best, only matters of supposition. The study did reveal, however, a considerable number of themes and motives in Symphony 1I that could be traced directly to Symphony I. A logical question followed: Were there similar recurrences in any of the other symphonies? Further research indicated that such instances of cyclicism (a more concise synonym for "recurring themes and motives") were not only common, but were an important element in Mahler's style.