There appears a deeper gloom, a more ominous spirit of the ancient and the obscure in the magic of old Mesopotamia than in that of any other land. Its mighty sanctuaries, its sky-aspiring towers, seem founded upon this belief in the efficacy of the spoken spell, the reiterated invocation. Thousands of spirits various and grotesque, the parents of the ghosts and goblins of a later day, haunt the purlieus of the temple, battening upon the remains of sacrifice (the leavings of the gorged gods), flit through the night-bound streets, and disturb the rest of the dwellers in houses. Demons with claw and talon, vampires, ghouls--all are there. Spirits blest and unblest, jinn, witch-hags, lemures, sorrowing unburied ghosts. No type of supernatural being appears to have been unknown to the imaginative Semites of old Chaldea. These must all be 'laid,' exorcised, or placated, and it is not to be marvelled at that in such circumstances the trade of the necromancer flourished exceedingly. The witch or wizard, however, the unprofessional and detached practitioner with no priestly status, must beware. He or she was regarded with suspicion, and if one fell sick of a strange wasting or a disease to which he could not attach a name, the nearest sorcerer, male or female, real or imaginary, was in all probability brought to book. Priestly Wizards There were at least two classes of priests who dealt in the occult--the _barû_, or seers, and the _asipû_, or wizards. The caste of the barû was a very ancient one, dating at least from the time of Khammurabi. The barû performed divination by consulting the livers of animals and also by observation of the flight of birds. We find many of the kings of Babylonia consulting this class of soothsayer. Sennacherib, for example, sought from the barû the cause of his father's violent death. The asipû, on the other hand, was the remover of taboo and bans of all sorts; he chanted the rites described in the magical texts, and performed the ceremony of atonement. It is He that stilleth all to rest, that pacifieth all. By whose incantations everything is at peace. The gods are upon his right hand and his left, they are behind and before him. The wizard and the witch were known as _Kassapu_ or _Kassaptu_. These were the sorcerers or magicians proper, and that they were considered dangerous to the community is shown by the manner in which they are treated by the code of Khammurabi, in which it is ordained that he who charges a man with sorcery and can justify the charge shall obtain the sorcerer's house, and the sorcerer shall plunge into the river. But if the sorcerer be not drowned then he who accused him shall be put to death and the wrongly accused man shall have his house.