The soul of a sleeper is supposed to wander away from his body and actually to visit the very places of which he dreams. But this absence of the soul has its dangers, for if from any cause it should be permanently detained away from the body, the person, deprived of his soul, must die.(411) 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.(412) 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.(413) Again, the soul may be prevented by physical force from returning. 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.(414) A similar story is reported from Transylvania as follows. In the account of a witch’s trial at Mühlbach last 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.(415)