The first collections sent to Norway ran the risks incident to war. Most of them were rescued from the storehouses at Antwerp after the German occupation, through the exertions of the Norwegian Foreign Office, though a smaller part, chiefly zoölogical, appears to have been lost in Genoa. Count Nils Gyldenstolpe, of the Natural History Museum, Vetenskapsakademien in Stockholm, who is determining the mammals collected, informs me that so far a new species of flying maki and two new subspecies of flying squirrels have been described. To further my enterprise, liberal gifts of supplies were received from various firms in Christiania: preserved milk from Nestle & Anglo-Swiss Condensed Milk Co., tobacco from Tiedemann's Fabrik, alcohol for preserving specimens from Löitens Braenderi, cacao from Freia Chokolade Fabrik. A medical outfit was presented by Mr. E. Sissener, Apotheket "Kronen," Christiania, and Messrs. Burrows, Wellcome & Co., of London, placed at my disposal three of their excellent medicinal travelling-cases. I want to express my appreciation of many services rendered by the Nederlandsche Handel-Maatschappij and its branches, especially the Factorij in Batavia. I am under similar obligations to the Koninklijke Paketvaart-Maatschappij, and my thanks are also due to De Scheepsagentuur for courtesies received. Miss Ethel Newcomb, of New York, has kindly transcribed the two songs rendered. Finally I desire to make grateful acknowledgment of valuable assistance rendered by Doctor J.C. Koningsberger, and by Doctor W. van Bemmelen, director of Koninklijk Magnetisch en Meteorologisch Observatorium, Weltevreden, Batavia. Although force of circumstances altered the scope and to some extent the character of this expedition, nevertheless my Bornean experiences afforded great satisfaction. Moreover, my sojourn in the equatorial regions of the East has imbued me with an even stronger desire to carry out my original purpose, which I hope to accomplish in the near future. CARL LUMHOLTZ NEW YORK, April, 1920. CONTENTS CHAPTER I DEPARTURE FROM NEW YORK--A RACE WITH THE IMPERIAL LIMITED--IMPRESSIONS OF JAPAN--SINGAPORE--ARRIVAL AT BATAVIA, JAVA--BUITENZORG--BORO BUDUR, THE WONDROUS BUDDHIST MONUMENT CHAPTER II BORNEO--CLIMATIC AND BIOLOGICAL CONDITIONS--NATURAL RESOURCES--POPULATION-- HISTORY--GOVERNMENT OF THE NATIVES--RACIAL PROBLEMS. CHAPTER III BANDJERMASIN, THE PRINCIPAL TOWN IN DUTCH BORNEO--NORTHWARD ALONG THE EAST COAST--BALIK PAPAN, AN OIL PRODUCING CENTRE--SAMARINDA--TANDJONG SELOR--THE SULTAN--UP THE KAYAN RIVER. CHAPTER IV AN EXPEDITION INTO THE JUNGLE--FIRST IMPRESSIONS--RAPID CHANGE IN THE DENSENESS OF VEGETATION--ANIMAL LIFE--A STUBBORN FIGHT CHAPTER V MEETING PUNANS, THE SHY JUNGLE PEOPLE--DOWN THE RIVER AGAIN--MY ENTHUSIASTIC BOATMEN--MALAYS VERSUS DAYAKS CHAPTER VI