Hitherto we have considered the process of communication (granting such to exist) solely from the physical and physiological sides, and not from the psychological. There is a great deal to be said in this latter connection, however, though I shall endeavour to be as brief as possible. Take, for instance, the question of _symbolism_. Our dreams, as we know, are largely symbolic, the work of Freud and others having proved this beyond all doubt. It is highly probable that the ravings of delirium are also of this nature, though no one, so far as I know, has yet devoted any serious attention to their study. Certainly it is true in mediumistic phenomena; for, in trance conditions, a larger number of messages, tests, and visions seen are of this nature and character--the symbolism often being so elaborate that the original thought is not perceived. As Mr. Coates remarked: "When a 'psychometer' places a geological specimen to his forehead, and describes an 'antediluvian monster,' roaring and walking about, no one but a very shallow individual would imagine for a moment that the psychometer was actually seeing the original," but rather that he obtained a faint and dream-like impression of the world at that epoch, and his subconscious impression was symbolized in the creature seen. A better example is, perhaps, furnished by the following: a gentleman of my acquaintance visited a certain trance-medium, and, among other things, she described a large key. This meant nothing to him at first; but later, and after some apparent effort, the medium succeeded in catching (and conveying) the idea that the key was symbolic of success--unlocking the door of happiness, etc.--whereupon all she had said fell naturally into place. Why this symbolism? The probable answer to this question is that the "message" cannot be given _directly_, and that this symbolic method of presentation must be resorted to in order to get the message through at all. There is good evidence to show that a pictorial method is resorted to, very largely, by the _soi-disant_ spirits--mediums seeing what they describe, very often, when the more direct auditory method is not resorted to. The "spirit" presents somehow to the mind of the medium a picture, which is described and often interpreted by the medium. Often this interpretation is quite erroneous--resembling a defective analysis of a dream. Because of this the message is not recognized. Yet the source of the message may have been perfectly "veridical."