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receive darkness as a cooperator, and employ in illuminating the light of the sun, or of the moon, or, in short, of the air.
Sometimes, likewise, they use collocations of such things as are adapted to the Gods that are about to descend, or they employ incantations or compositions, and these appropriately prepared for the reception, presence, and manifestation of the Gods. And again, sometimes they introduce light through water, because this being diaphanous, is aptly disposed to the reception of light. But at other times, they cause light to shine forth on a wall, having previously prepared the wall for the reception of light in the best manner by the sacred descriptions of characters; and, at the same time, they fix the light in a certain solid place, so that it may not be widely diffused.
Many other modes, also, of introducing light might be mentioned; but all of them may be referred to one mode, that of irradiation, where-*ever it may be effected, and through whatever instruments the Gods may illuminate. Since, therefore, this illumination accedes externally, and has every thing which it possesses subservient to the will and intelligence alone of the Gods, and as the greatest thing pertaining to it, possesses a sacred irradiating light, either supernally derived from ether, or from the air,
