Before going out to collect camphor, the Dyaks live in little huts in the jungle, and listen to the omens of birds, just as they would do before going out gutta-hunting. If the omens be favourable, then they start off, being careful not to use in conversation certain words which are considered “taboo,” or _mali_. It is forbidden to use the word “camphor,” or to mention the names of the implements used in working it, or of any races, such as the Chinese, Malays, or Europeans, because these will have something to do with the selling of the camphor later on. If the spirits who own the camphor know what the men are after, or that their property is likely to be taken away and sold to distant lands, they will carefully hide it, and the camphor workers will never be able to find it; so the Dyaks have to use other expressions to express the articles whose names must not be mentioned. “Camphor” becomes “the thing that smells,” and so on. The Dyaks, as well as the Malays, believe that to be careless and to make use of any forbidden word is sure to result in failure to find camphor. Even if a tree containing camphor is felled, they say that the crystallized camphor will become liquid, and therefore useless. When a camphor-tree is found in the jungle it is chipped with an axe between two buttresses, and the wood smelt. If the wood smells very strongly of camphor, then it is likely that the trunk is hollow, and there is crystallized camphor-gum inside it. They tap the trunk to find out how far up this hollow extends. The tree is cut down at this place, and the stump remains standing. The wood is then split down on each side. There is a good deal of uncertainty in the finding of camphor. If lucky, the workers may find the whole of the hollow trunk from four to seven feet deep full of crystallized camphor. On the other hand, the hole in the wood may be quite empty, except for a little liquid gum at the bottom, which is useless. This crystallized camphor fetches a good price in the Chinese market. The Chinese value it very highly for medicinal purposes, and as much as fifty dollars or more is given for a _katty_—a pound and a quarter—of it. CHAPTER XX SOME PERSONAL EXPERIENCES The itinerant missionary—Visit to a Dyak house—Reception—Cooking—Servants—The meal—Teaching the Dyaks—Christians—Services—Prayer-houses—Offertory—Reception of the missionary—Dangers of sea travelling during the north-east monsoon—My boat swamped—In the jungle—Losing my way—A Dyak’s experience. As the long Dyak village houses are often built at great distances from each other, the missionary who wishes to do effective work among the Dyaks must travel from house to house. Only by visiting distant villages, and living with the Dyaks as their guest, can the missionary learn to understand the people, and know their real inner life.