Leiden, The Society for the Promotion of the Scientific Exploration of the Dutch Colonies [Leyden, E. J. Brill; Amsterdam, H. Gerlings], 1900-1902. Two parts in two, 4to. (28.0 x 19.0 cm, text) xix, 585 pp.; 89 text illustrations, three maps (two folded) and 56 plates; Folio (48.7 x 33.6 cm, atlas), frontispiece, [ii] pp.; 22 mostly folded and tinted or coloured maps and views (often with additional, smaller maps).

Written by the Dutch geologist Gustaaf Adolf Frederik Molengraaff (1860-1942). The author's own copy of the revised English edition of a work first published in Dutch (however, with the map captions always in English). It is the first detailed geographical and geological description of central Kalimantan, now part of Indonesia. Profusely illustrated with fine photographed plates, maps and a comprehensive geological description of the region. The English, It is the first detailed geographical and geological description of central Borneo, now Kalimantan, and in particular the (by far largest) Indonesian part. The text volume has an appendix on fossil Radiolaria by the British geologist, palaeontologist, Fellow of the Royal Society, and recipient of the Lyell Medal, George Jennings Hinde (1839-1918), which is not present in the Dutch edition. The main work has 52 plates, the 56 pp. appendix by Hinde has four. With the small stamp "Boekerij van G. A. F. Molengraaf" (Library of G. A. F. Molengraaf) om the front free endpaper, and the title page top margin. The atlas with a bilingual English/Dutch index and legend, and Dutch errata. Front free endpaper of the text volume detached; otherwise a fine copy and in all an important and very good set. Cat. BM(NH) p. 1333.