At the completion of this critical bibliography which forms another step in the direction of the realization of the bibliographical project inaugurated in 1955 by Dr. Voorhoeve's survey of the languages of Sumatra, I acknowledge with gratitude the valuable assistance received from various people. I am indebted to my colleagues Prof. Dr. G. W. J. Drewes, Dr. J. Noorduyn, Dr. Th. Pigeaud, Prof. Dr. A. Teeuw and Dr. P. Voorhoeve, who read all or part of the manuscript and who generously put their extensive knowledge of the Java languages at my disposal. Heartfelt thanks are due to Mr. B. J. Hoff and Mr. A. G. Sciarone, both members of my staff, who verified many of the biblio graphical details. I am grateful to the library of the University of Leiden and to the library of the Institute in The Hague because of their readiness in giving me all the facilities I needed for the preparation of this book. Most useful was the cordial assistance received from my colleague Prof. Dr. P. E. de Josselin de Jong, who spent much time correcting the many imperfections of my English text, which greatly promoted the readability of the narrative sections of this survey."

At the completion of this bibliography, the second of the planned series on language study in Indonesia, the authors acknowledge with gratitude the kind assistance of Father Donatus Dunselman, Dr A. H. Hill and Dr P. Voorhoeve who have read all or part of the manuscript. Also our heartfelt thanks are due to those who have provided us with information indispensable for the compilation of the bibliographical data, or have given us the opportunity to inspect their archives for linguistic literature on Borneo, i.e. the very Rev. A. Antonissen, Jesselton, North Borneo, Father W. Boon, Rector of the Catholic Mission, Mukah, Sarawak, Dr N. C. Scott, the Society for promoting Christian Knowledge, London, the British and Foreign Bible Society, London, the School of Oriental and African Studies, London, the Basle Mission, Basle, Switzerland, the Rhenish Mission, Wuppertal, Germany, the Dutch Bible Society, Amsterdam. The authors greatly appreciate the grant from the Netherland Institute for International Cultural Relations which made this public ation possible.