Many people believe that our faculties have a limit beyond which we cannot go, but this is certainly not so, as it is now proved that some people have the X-ray sight by nature and can see far more than others. This faculty has nothing to do with keenness of sight, it is a question of sight which is able to respond to different series of vibrations. Undoubtedly there are many entities about us who do not reflect rays of light that we can see, yet who may reflect those other rays of rates of vibration which can be photographed. It is extremely difficult for the average person to grasp the reality of that which we cannot see with our physical eyes, and to realize how very partial our sight is, yet science continually demonstrates to us worlds of teeming life of whose very existence we should be ignorant so far as our senses are concerned. What ought clearly to be grasped is the fact that we are not separated from the so-called dead, save by the limitation of our consciences. We have not lost those gone before, we have only lost the power to see them, and very occasionally that power is restored to us, by what means we know not. All visible things are the result of invisible causes, and doubtless those denizens of the subtler worlds come amongst us with a distinct purpose in view. Sometimes that purpose can be traced to remorse, revenge, a quest, a strong attraction to the scene of a crime, but in many other cases no object can be discerned. The condition of the observer is constantly found to be absolutely normal. The mental conditions of both myself and N. were, as far as we could tell, quite normal. Our mental activity was no greater, no more vivid or more accurate than usual, yet we both saw an object that was beyond normal sense and rational vision. The fact that so often there is no connecting link between the apparition and his or her surroundings induces me to believe that we are everywhere surrounded by the denizens of the other world, and on rare occasions we catch a glimpse of them. Here is another utterly trivial story which emphasizes the above suggestion. I was lunching with my husband in a house built within the last fifty years. The only former occupants were known to us. We were discussing a letter I had that morning received and I said: "I'll go and fetch it for you to read." I rose and left the dining-room, and pushed open the half-closed door of the adjoining drawing-room. What was my astonishment to behold standing in the middle of the floor a tall, dark man, a total stranger. He stood exactly between the door and a large bow window, through which poured a flood of sunshine, and I paused involuntarily and stared at him. Not that there was anything the least peculiar about him, and, indeed, his air of great respectability instantly banished the flashing thought of "Burglar."