One morning I entered the rooms of one of the principal blians, from whom I wanted to buy his shield, used as a musical instrument to accompany his song. The shield looks like the ordinary variety used by all the tribes of the Mahakam and also in Southern Borneo, but has from four to ten rattan strings tied lengthwise on the back. In singing to call good spirits, antohs, especially in case somebody is ill, he constantly beats with a stick on one of the strings in a monotonous way without any change of time. Among the Penihings this shield is specially made for the blian's use, and unless it be new and unused he will not sell it, because the blood of sacrificial animals has been smeared on its surface and the patient would die. The only way I could secure one was by having it made for me, which a blian is quite willing to do. This man paid little attention to my suggestion of buying, but suddenly, of his own accord, he seized the shield and played on it to show me how it was done. While he sings he keeps his head down behind the shield, which is held in upright position, and he strikes either with right or left hand. He had scarcely performed a minute when a change came over him. He stamped one foot violently upon the floor, ceased playing, and seemed to be in a kind of trance, but recovered himself quickly. A good antoh, one of several who possessed him, had returned to him after an absence and had entered through the top of his head. So strong is the force of auto-suggestion. It was a matter of considerable interest to me to meet here representatives of two nomadic tribes of Borneo who had formed small settlements in this remote region. I had already made the acquaintance of the Punans in the Bulungan, but as they are very shy I welcomed the opportunity of meeting them on more familiar terms. For more than a generation a small number has been settled at Serrata, six hours walking distance from Long Kai. The other nomads, called Bukats, from the mountains around the headwaters of the Mahakam, have lately established themselves on the river a short distance above its junction with the Kasao; a few also live in the Penihing kampong Nuncilao. These recent converts from nomadic life still raise little paddi, depending mostly upon sago. Through the good offices of the Long Kai kapala people of both tribes were sent for and promptly answered the call. The Punan visitors had a kapala who also was a blian, and they had a female blian too, as had the Bukats.