1905 94 p., 4 (3 double) lithographed pls, disbound (partly loose, no back cover). Unopened copy. Published in: Jenaische Zeitschrift für Naturwissenschaft.
1903 96 p., 10 figs, 3 folded lithographed pls, disbound (no covers). Unopened copy. Published in: Jenaische Zeitschrift für Naturwissenschaft.