I have also to thank the Rev. Charles Johnson, of White Lackington, and Charles Benyon, Esq., for the photographs which they placed at my disposal, and which have enabled me to insert, among other plates, the most life-like pictures of the Land and Sea Dayaks I have ever seen. To the Society for the Propagation of the Gospel I am also indebted for their generous offer to place all their drawings at my disposal. I must likewise draw attention to the exquisite manner in which the plates of the Nepenthes are coloured, and to the beauty of the engravings in general. They are admirably illustrative of the country, and do very great credit to the lithographers, Messrs. Day and Son, and to their excellent draughtsmen. I ought also to mention that the Nepenthes are drawn less than half the natural size, as it was found impracticable to introduce the full size without many folds, which would have speedily destroyed the beauty of the plates. I will add a few words respecting the maps. The one of the districts around Kina Balu was constructed from the observations made during our two expeditions to that mountain. The map of the Limbang and Baram rivers is the result of many observations, and with regard to the position of the main mountains, I think substantially correct, as they were fixed with the aid of the best instruments. The third map is inserted in order to give a general idea of the North-West Coast, though the run of the rivers is often laid down by conjecture. CONTENTS. PAGE INTRODUCTION 1 CHAPTER I. THE SEA DAYAKS.