The soul is supposed to be absent in sleep.
The soul of a sleeper is supposed to wander away from his body and actually to visit the places, to see the persons, and to perform the acts of which he dreams. For example, when an Indian of Brazil or Guiana wakes up from a sound sleep, he is firmly convinced that his soul has really been away hunting, fishing, felling trees, or whatever else he has dreamed of doing, while all the time his body has been lying motionless in his hammock. A whole Bororo village has been thrown into a panic and nearly deserted because somebody had dreamed that he saw enemies stealthily approaching it. A Macusi Indian in weak health, who dreamed that his employer had made him haul the canoe up a series of difficult cataracts, bitterly reproached his master next morning for his want of consideration in thus making a poor invalid go out and toil during the night.123 The Indians of the Gran Chaco are often heard to relate the most incredible stories as things which they have themselves seen and heard; hence strangers who do not know them intimately say in their haste that these Indians are liars. In point of fact the Indians are firmly convinced of the truth of what they relate; for these wonderful adventures are simply their dreams, which they do not distinguish from waking realities.124
The soul absent in sleep may be prevented from returning to the body.
Now the absence of the soul in sleep has its dangers, for if from any cause the soul should be permanently detained away from the body, the person thus deprived of the vital principle must die.125 There is a German belief that the soul escapes from a sleeper's mouth in the form of a white mouse or a little bird, and that to prevent the return of the bird or animal would be fatal to the sleeper.126 Hence in Transylvania they say that you should not let a child sleep with its mouth open, or its soul will slip out in the shape of a mouse, and the child will never wake.127 Many causes may detain the sleeper's soul. Thus, his soul may meet the soul of another sleeper and the two souls may fight; if a Guinea negro wakens with sore bones in the morning, he thinks that his soul has been thrashed by another soul in sleep.128 Or it may meet the soul of a person just deceased and be carried off by it; hence in the Aru Islands the inmates of a house will not sleep the night after a death has taken place in it, because the soul of the deceased is supposed to be still in the house and they fear to meet it in a dream.129 Similarly among the Upper Thompson Indians of British Columbia, the friends and neighbours who gathered in a house after a death and remained there till the burial was over were not allowed to sleep, lest their souls should be drawn away by the ghost of the deceased or by his guardian spirit.130 The Lengua Indians of the Gran Chaco hold that the vagrant spirits of the dead may come to life again if only they can take possession of a sleeper's body during the absence of his soul in dreams. Hence, when the shades of night have fallen, the ghosts of the departed gather round the villages, watching for a chance to pounce on the bodies of dreamers and to enter into them through the gateway of the breast.131 Again, the soul of the sleeper may be prevented by an accident or by physical force from returning to his body. When a Dyak dreams of falling into the water, he supposes that this accident has really befallen his spirit, and he sends for a wizard, who fishes for the spirit with a hand-net in a basin of water till he catches it and restores it to its owner.132 The Santals tell how a man fell asleep, and growing very thirsty, his soul, in the form of a lizard, left his body and entered a pitcher of water to drink. Just then the owner of the pitcher happened to cover it; so the soul could not return to the body and the man died. While his friends were preparing to burn the body some one uncovered the pitcher to get water. The lizard thus escaped and returned to the body, which immediately revived; so the man rose up and asked his friends why they were weeping. They told him they thought he was dead and were about to burn his body. He said he had been down a well to get water, but had found it hard to get out and had just returned. So they saw it all.133 A similar story is reported from Transylvania as follows. In the account of a witch's trial at Mühlbach in the eighteenth century it is said that a woman had engaged two men to work in her vineyard. After noon they all lay down to rest as usual. An hour later the men got up and tried to waken the woman, but could not. She lay motionless with her mouth wide open. They came back at sunset and still she lay like a corpse. Just at that moment a big fly came buzzing past, which one of the men caught and shut up in his leathern pouch. Then they tried again to waken the woman, but could not. Afterwards they let out the fly; it flew straight into the woman's mouth and she awoke. On seeing this the men had no further doubt that she was a witch.134
Danger of awaking a sleeper suddenly before his soul has time to return.
It is a common rule with primitive people not to waken a sleeper, because his soul is away and might not have time to get back; so if the man wakened without his soul, he would fall sick. If it is absolutely necessary to rouse a sleeper, it must be done very gradually, to allow the soul time to return.135 A Fijian in Matuku, suddenly wakened from a nap by somebody treading on his foot, has been heard bawling after his soul and imploring it to return. He had just been dreaming that he was far away in Tonga, and great was his alarm on suddenly wakening to