But let the surface of the water be ruffled by the wind and what do we find then? A reflection still, certainly, but so broken up and distorted as to be quite useless or even misleading as a guide to the shape and real appearance of the objects reflected. Here and there for a moment we might happen to get a clear reflection of some minute part of the scene--of a single leaf from a tree, for example; but it would need long labour and considerable knowledge of natural laws to build up anything like a true conception of the object reflected by putting together even a large number of such isolated fragments of an image of it. Now in the astral plane we can never have anything approaching to what we have imaged as a still surface, but on the contrary we have always to deal with one in rapid and bewildering motion; judge, therefore, how little we can depend upon getting a clear and definite reflection. Thus a clairvoyant who possesses only the faculty of astral sight can never rely upon any picture of the past that comes before him as being accurate and perfect; here and there some part of it _may_ be so, but he has no means of knowing which it is. If he is under the care of a competent teacher he may, by long and careful training, be shown how to distinguish between reliable and unreliable impressions, and to construct from the broken reflections some kind of image of the object reflected; but usually long before he has mastered those difficulties he will have developed the mental sight, which renders such labour unnecessary. On the next plane, which we call the mental, conditions are very different. There the record is full and accurate, and it would be impossible to make any mistake in the reading. That is to say, if three clairvoyants possessing the powers of the mental plane agreed to examine a certain record there, what would be presented to their vision would be absolutely the same reflection in each case, and each would acquire a correct impression from it in reading it. It does not however follow that when they all compared notes later on the physical plane their reports would agree exactly. It is well known that if three people who witness an occurrence down here in the physical world set to work to describe it afterwards, their accounts will differ considerably, for each will have noticed especially those items which most appeal to him, and will insensibly have made them the prominent features of the event, sometimes ignoring other points which were in reality much more important.