Upon Wienersdorf enquiring from what these poisons were made, Dalim informed him that the two principal kinds used by the Dayaks were known under the names of siren and ipoh. They were both vegetable poisons, but no specific botanical name was known for the trees from which they were obtained. About the preparation of the poisons, however, Dalim after repeated requests gave the following account.
In the interior of Borneo, and especially along the slopes of mountains and hills, there grows a tree called batang siren by the natives. Like our oak this tree reaches the age of a hundred years and more. A white milky fluid flows from it when tapped, which is collected in a little bamboo cylinder. On contact with the air, this sap soon loses its color, turns first yellow, then brown and finally black. When it leaves the tree the fluid is perfectly harmless and only acquires its poisonous properties after evaporation and admixture with other plants. The sap having been properly treated and thickened is poured into a stone jar while warm; upon cooling it soon coagulates. The Dayaks always [[112]]carry this jar with them fastened to the waistband from which their mandauws depend. When required for use it is again heated in order to liquefy it. The points of their arrows are then dipped in it and speedily become covered with a thin layer of gum which dries immediately.
The first symptom shown by the wounded is a copious vomiting. This is followed by paralysis of the limbs, which continues for about ten minutes, when death ensues amid violent convulsions.
The ipoh is prepared in a similar manner, but that poison is taken from a creeper. The only difference between the effects of the ipoh and siren poisons is that the former is not attended by vomiting.
Every Dayak knows how to prepare both these poisons, but as the plants and the accessory ingredients are chiefly found in the mountainous districts, the inhabitants of the upper countries are more expert in their preparation than the natives of the coast.
About mid-day our travellers approached the soengei Moeroi. When trying to row past it they saw a raft coming down this broad soengei. It carried three men, who were employing all their strength in the effort to stop the course of their unmanageable craft. One of them called for assistance, and as according to the custom of the country a refusal was not to be dreamed of, Dalim steered his boat toward the raft and was soon moored alongside of it.
It was being rapidly carried away by the strong tide; therefore the first thing to be done was to make for the shore and to [[113]]moor it there. Our adventurers soon produced their rattan cables, as well as the anchor chains which they had taken with them from soengei Naning. Having joined these firmly together, they fastened one end to a kind of capstan on the raft while the other end was carried ashore in a djoekoeng and tied around the trunk of a strong tree. The raft was still drifting onward with the current when the cable being drawn taut, its progress was suddenly arrested. The result was a violent shock which pitched Schlickeisen and La Cueille headlong into the river; but they were soon rescued by Dalim and some of his new friends.
The cable stood the shock admirably; it remained stretched like a cord, though the raft trembled under the pressure of the tide. Presently the unwieldy structure swung around toward the shore, when they managed by the aid of the capstan to bring it gradually nearer the tree, to which it was eventually fastened by the cable.
Our travellers now learned that the owner of the raft, a native of Kwala Kapoeas named Bapa Andong, had been collecting forest products in soengei Moeroi and had been very successful. He now was on his way to Lake Ampang, where he had various kinds of produce safely stored: but being short-handed he was unable to take his raft there against the tide. He now addressed himself to Johannes, whom he regarded as the leader of the party, and proposed that they should all help him in the navigation of his unwieldy craft. His son, with six hirelings, was awaiting his arrival at the lake, and he felt anxious about their safety. It was at length settled that our travellers should assist in taking the raft to the lake and in embarking all the goods [[114]]there stored; that they should then bring the raft back again into the Kapoeas stream, after which their further assistance would be unnecessary.
Before concluding these arrangements the bargain was struck that when they should separate the two hirelings should be transferred to the canoes of our adventurers.