It is a fear lest the presence of strangers might frighten the spirits or put them in a bad humour, and so defeat the object of the ceremony; for, while the religious ceremonies which accompany the cultivation of the rice differ somewhat from each other in different tribes, the ideas at the bottom of them, we are told, are everywhere the same: the aim always is to appease and propitiate the souls of the rice and the other spirits by sacrifices of all sorts.(317) (M69) However, during this obligatory period of seclusion and rest the Kayans employ themselves in various pursuits, which, though at first sight they might seem to serve no other purpose than that of recreation, have really in the minds of the people a much deeper significance. For example, at this time the men often play at spinning tops. The tops are smooth, flat pieces of wood weighing several pounds. Each man tries to spin his own top so that it knocks down those of his neighbours and continues itself to revolve triumphantly. New tops are commonly carved for the festival. The older men sometimes use heavy tops of iron-wood. Again, every evening the young men assemble in the open space before the chief’s house and engage in contests of strength and agility, while the women watch them from the long gallery or verandah of the house. Another popular pastime during the festival of sowing is a masquerade. It takes place on the evening of the tenth day, the day on which, for the second time, the people are forbidden to bathe. The scene of the performance is again the open space in front of the chief’s house. As the day draws towards evening, the villagers begin to assemble in the gallery or verandah of the house in order to secure good places for viewing the masquerade. All the maskers at these ceremonies represent evil spirits. The men wear ugly wooden masks on their faces, and their bodies are swathed in masses of slit banana leaves so as to imitate the hideous faces and hairy bodies of the demons. The young women wear on their heads cylindrical baskets, which conceal their real features, while they exhibit to the spectators grotesque human faces formed by stitches on pieces of white cotton, which are fastened to the baskets. On the occasion when Dr. Nieuwenhuis witnessed the ceremony, the first to appear on the scene were some men wearing wooden masks and helmets and so thickly wrapt in banana leaves that they looked like moving masses of green foliage. They danced silently, keeping time to the beat of the gongs. They were followed by other figures, some of whom executed war-dances; but the weight of their leafy envelope was such that they soon grew tired, and though they leaped high, they uttered none of the wild war-whoops which usually accompany these martial exercises. When darkness fell, the dances ceased and were replaced by a little drama representing a boar brought to bay by a pack of hounds. The part of the boar was played by an actor wearing a wooden