All this makes the theory somewhat incredible, even though it be not much more so than the many other phenomena in which the shock of the miraculous has been softened by familiarity. We can find more or less everywhere in nature that prodigious faculty of storing away inexhaustible energies and ineffaceable tram, memories and impressions in space. There is not a thing in this world that is lost, that disappears, that ceases to be, to retain and to propagate life. Need we recall, in this connection, the incessant mission of pictures perceived by the sensitized plate, the vibrations of sound that accumulate in the disks of the gramophone, the Hertzian waves that lose none of their strength in space, the mysteries of reproduction and, in a word, the incomprehensibility of everything around us? 8 Personally, if I had to choose, I should, in most of these laboratory cases, frankly adopt the theory that the object touched serves simply to detect, among the prodigious crowd of human beings, the one who impregnated it with his "fluid." "This object," says Dr. Osty, "has no other function than to allow the medium's sensitiveness to distinguish a definite force from among the innumerable forces that assail it." It seem more and more certain that, as the cells of an immense organism, we are connected with everything that exists by an inextricable network of vibrations, waves, influences, of nameless, numberless and uninterrupted fluids. Nearly always, in nearly all men, everything carried along by these invisible wires falls into the depths of the unconsciousness and passes unperceived, which does not mean that it remains inactive. But sometimes an exceptional circumstance--in the present case, the marvellous sensibility of a first-class medium--suddenly reveals to us, by the vibrations and the undeniable action of one of those wires, the existence of the infinite network. I will not speak here of trails discovered and followed in an almost mediumistic manner, after an object of some sort has been sniffed at. Such stories, though highly probable, as yet lack adequate support. But, within a similar order of ideas, and in a humbler world and one with more modest limits, the dog, for instance, is incessantly surrounded by different scents and smells to which he appears indifferent until his attention is aroused by one or other of these vagrant effluvia, when he extricates it from the hopeless tangle. It would seem as though the trail took life, vibrating like a chord in unison with the animal's wishes, becoming irresistible, and taking it to its goal after innumerable winds and turns.