Complex sentence: His book the "Mission des Juifs" (1884) was favourable to Jews, but material from it was used for "The Secret of the Jews", an anti-semitic tract attributed to Yuliana Glinka.
Split into simpler sentences: His book the "Mission des Juifs" (1884) was favourable to Jews. The material from it was used for "The Secret of the Jews", an anti-semitic tract attributed to Yuliana Glinka.