The witch doctor now produces his _Batu Ilau_ ("stone of light") and gravely looks into it to see where the soul is, and to discover what is the proper ceremony for the case. When there is serious illness, the witch doctor affirms that the spirit of the afflicted person has already left the body and is on its way to the other world, but that he may be able to overtake it and bring it back, and restore it to the person to whom it belongs. He pretends to converse with the evil spirit that troubles the sick man, repeating aloud the answers that the spirit is supposed to make. There are many different ceremonies resorted to in cases of illness, but the following is what is common to all _Manang_ performances. In the public hall of the Dyak house, a long-handled spear is fixed blade upwards, with a few leaves tied round it, and at its foot are placed the medicine boxes of all the witch doctors who take part in the ceremony. This is called the _Pagar Api_ ("fence of fire"). Why it is called by this curious name is not clear. The _Manangs_ all squat on the floor, and the leader begins a long monotonous drawl, the rest either singing in concert, or joining in the choruses, or singing in turn with him. After a tiresome period of this, they stand up and march with slow and solemn step in single file round the _Pagar Api_. The monotonous chant sometimes slackens, sometimes quickens, as they march round and round the whole night through, with only one interval for food in the middle of the night. The patient simply lies on his mat and listens.