Again, if for the sake of argument it should be admitted that Mr. Crookes’ word “however” might have been clairvoyantly read, what shall we say of mediumistic communications having a prophetic character? Does any theory of mediumistic impulse account for the ability to foretell events beyond the possible knowledge of both speaker and listener? Mr. Cox will have to try again. As we have said before, the modern psychic force, and the ancient oracular fluids, whether terrestrial or sidereal, are identical in essence—simply a blind force. So is air. And while in a dialogue the sound-waves produced by a conversation of the speakers affect the same body of air, that does not imply any doubt of the fact that there are two persons talking with each other. Is it any more reasonable to say that when a common agent is employed by medium and “spirit” to intercommunicate, there must necessarily be but one intelligence displaying itself? As the air is necessary for the mutual exchange of audible sounds, so are certain currents of astral light, or ether directed by an _Intelligence_, necessary for the production of the phenomena called spiritual. Place two interlocutors in the exhausted {200} receiver of an air-pump, and, if they could live, their words would remain inarticulate thoughts, for there would be no air to vibrate, and hence no ripple of sound would reach their ears. Place the strongest medium in such isolating atmosphere as a powerful mesmerizer, familiar with the properties of the magical agent, can create around him, and no manifestations will take place until some opposing intelligence, more potential than the will-power of the mesmerizer, overcomes the latter and terminates the astral inertia. The ancients were at no loss to discriminate between a blind force acting spontaneously and the same force when directed by an intelligence. Plutarch, the priest of Apollo, when speaking of the oracular vapors which were but a subterranean gas, imbued with intoxicating magnetic properties, shows its nature to be dual, when he addresses it in these words: “And who art thou? without a God who creates and ripens thee; without a dæmon [spirit] who, acting under the orders of God, directs and governs thee; thou canst do nothing, thou art _nothing_ but a vain breath.”[328] Thus without the indwelling soul or intelligence, “Psychic Force” would be also but a “vain breath.”