when fifteen years of age, he entered anton von schmid's printing establishment in vienna, which his father had acquired. the talmud published with the imprint of von schmid and bush was prized for some time afterwards for its exactness. for six years (1842–47) bush edited and published the "kalender und jahrbuch für israeliten" (vienna). its plan was the presentation in the same book of the productions of leading jewish scholars of divergent views. among these were leopold zunz, s. l. rapoport, s. d. luzzatto, gotthold salomon, ludwig philippson, michael sachs, isaac noah mannheimer, joseph wertheimer, leopold stern, theodor creizenach, ludwig august von frankl, leopold kompert, leopold löw, and simon szanto. some of these made their first appearance as writers in the pages of the "jahrbücher." in 1844 he edited "mesillat ha-limmud" (way of instruction), which was published by his father after bush had left for america. liberal in politics, he edited the "osterreichisches zentral-organ für glaubensfreiheit", and other revolutionary papers issued from his press.