The vision, when it occurs, may be conveyed in one of two ways: first, as a vivid picture affecting the focus and retina of the eye, perfect in its outline and colouring, and giving the sense of nearness or distance; secondly, as a vivid mental impression accompanied by a hazy or dim formation in the "field" of vision. In this latter form it becomes an apperception rather than a perception, the mind receiving the impression of the vision to be conveyed before it has had time to form and define itself in the field. As already intimated, there appears to be a connection between the temperamental peculiarities of the two classes of clairvoyants and the kind of vision developed in them. Thus the direct vision is more generally found in association with the passive temperament. The direct vision is neither so regular nor so constant as the symbolic vision owing to the peculiarities of the negative or passive subject. When it does develop, however, the direct vision is both lucid and actual, and has literal fulfilment in the world of experience and fact. It is an actual representation of what has actually happened or will have place in the future, or yet may be presently happening at some place more or less distant. The symbolic vision, on the other hand, is more generally developed in the positive or active type of seer. It has the advantage of being more regular and constant in its occurrence than the direct vision, while at the same time being open to the objection that it is frequently misinterpreted. Nothing shows this better perhaps than the various interpretations which have been made of the Apocalypse. The positive temperament appears to throw off the mental images as speedily as they are developed in the subconscious area, and goes out to meet them in a mood of speculative enquiry. But the passive temperament most frequently feels first and sees afterwards, the visionary process being entirely devoid of speculation and mental activity. In a word, the distinction between them is that the one sees and thinks while the other feels and sees. The manner in which the visions appear to develop in the field requires some description, and for reasons which will presently appear it is essential that the earliest experiments should be made in the light of a duly informed expectancy. At first the crystal or mirror will appear to be overclouded by a dull, smoky vapour which presently condenses into milky clouds among which are seen innumerable little gold specks of light, dancing in all directions, like gold-dust in a sunlit air. The focus of the eye at this stage is inconstant, the pupil rapidly expanding and contracting, while the crystal or mirror alternately disappears in a haze and reappears again. Then suddenly the haze disappears and the crystal looms up into full view, accompanied by a complete lapse of the seer into full consciousness of his surroundings.