“Beasts there are none; for there is no food for them. But there is a marvellous thing related of this desert, which is that when travellers are on the march by night, and one of them chances to drop behind, or to fall asleep or the like, when he tries to regain his company, he will hear spirits talking, and suppose them to be his comrades. Sometimes the spirits will call him by name; and thus shall a traveller frequently be led astray so that he never finds his party. And in this way many have perished. Sometimes the travellers will hear as it were the tramp and murmur of a great cavalcade of people away from the real line of road, and taking this to be their own company, will follow the sound; and when day breaks they discover the deception, and perceive that they are in an evil plight. Even in the day time the spirits may be heard talking. And sometimes you shall hear the sound of various musical instruments, and still more commonly the rattle of drums. Hence, in performing this journey, it is customary for travellers to keep close together. All the animals, too, have bells at their necks, so that they cannot easily get astray. And at sleeping time a signal is hoisted to show the direction of the next march. “And in this way it is that the desert is crossed.” * * * * * As the sea has its mermaids, and the river its water-sprites, Undines, or Loreleys, which entice their victims to death, so the deserts and waste places of the earth have their goblins and malignant demons. The awe inspired by the vastness and dreary solitude of the wilderness suggests to the imagination only gloomy ideas, and it is conceived of as a place where no influences or beings favourable to man can exist. Its sounds are sounds of terror; its appearances all foster a sentiment of mystery. Pliny tells us of the phantoms that start up before the traveller in the African deserts; Mas’udi, of the Ghûls, which in night and solitude seek to lead him astray. An Arab writer relates a tradition of the Western Sahara:—“If the wayfarer be alone the demons make sport of him, and fascinate him, so that he wanders from his course and perishes.” Colonel Yule remarks that the Afghan and Persian wildernesses also have their _Ghûl-i-Beában_, or Goblin of the Waste, a gigantic and fearful spectre which devours travellers; and even the Gaels of the West Highlands have the desert creature of Glen Eiti, which, one-handed, one-eyed, one-legged, seems exactly to answer to the Arabian Nesúas or _Empusa_. And it may be added that the wind-swept wastes of Dartmoor, limited as is their expanse, are, in the eyes of the peasantry, haunted by mysterious and malevolent spirits.