Prof. Denton carried the results of psychometry far beyond the boundaries reached by Dr. Buchanan. If the world is one vast picture gallery of every act and thought since the beginning of time, the fossil shell, the rock-fragment, the broken arrow head, the shred of mummy, and the rush leaf from the banks of the Nile should reproduce in the sensitive the story of their origin and age. By a great number of experiments, the details of which fill three volumes, Prof. Denton sought to establish this generalization and write the geological and pre-historic history of the earth. That he found a kernel of truth can not be denied, but he allowed sources of error to creep in and vitiate his wonderfully suggestive and patient research. A person sensitive to the degree that enables him to feel the influences given to a fragment of stone thousands of years ago, would be more strongly impressed with the influence imparted by the one who secured it, and held it in his hands before the experiment. It is from this cause that uncertainty rests on his otherwise well-planned experiments. Yet he has proved that such sensitiveness exists, and that by it the story of history from fragments of ruined architecture may be read, and scenes in geological ages by fossil, bone or shell be described. How? Really psychometry, depending on the sensitiveness of the brain, is a lower degree of clairvoyance, and is merged, in its clearest forms, therein. Sensitiveness means the capability of receiving the psycho-ether waves as they pulsate from some center, and as everything touched by life is in a state of such vibration, the recognition is only a question of the delicacy of the receiving organization. There is a vast accumulation of narratives of ghosts, witches, apparitions, hallucinations, illusions, dreams, etc., which it is the present fashion to relegate to the sphere of superstition and ignorance. Many of these, however anomalous, have a foundation in fact, and will be found, when stripped of the portions superstition has added, readily explainable, either as subjective, arising from impressions on the sensitive, or as objective and manifested by the same principles. As sensitiveness to these subtile influences greatly varies in different individuals and at different times in the same individual, and at times becomes clairvoyance, scarcely an illustration can be given of one without introducing the other. We must constantly bear in mind that there is one fundamental cause back of all these so-called occult phenomena, varying in the degree of its manifestation in accord with the channel through which it flows.