Leiden, E. J. Brill, [1882]-1887. 8vo (24.2 x 15.7 cm). viii, 208 pp.; five lithographed plates. Original printed boards. = A detailed study with notes on the mineral properties and contents. The plates show minerals (some crystals), and two maps. The "angrenzenden Inseln" are Pulu Samauw, Pulu Kambing, and Kisser; all to the east of Timor. Published in the series, "Sammlungen des geologischen Reichs-Museums in Leiden, herausgegeben von K. Martin und A. Wichmann". Cancelled library stamp, label on spine foot, otherwise a very good, clean copy.