Steiner (Jacob): Gesammelte Werke, ed. K. Weierstrass, Berlin, 1881, 2 vols., 8vo, contemporary brown half morocco -- Hindenburg (Carl Friedrich): Sammlung combinatorisch-analytische Abhandlungen, Leipzig, bey Gerhard Fleischer, 1796, 2 vols, 8vo, contemporary boards -- Journal für die Reine und Angewandte Mathematik, ed. A.L. Crelle and C.W. Borchardt, Berlin, 1872-76, 3 vols., 4to, folding lithographed plates, contemporary brown half morocco; and 44 others in German, 18th to 19th-century, including later editions of works by Cauchy, Euler and Ohm. (50)