Mediumistic phenomena, manifestations of the secondary or the subliminal consciousness, between man and man, are, as we have more than once had occasion to assure ourselves, capricious, undisciplined, evasive and uncertain, but more frequent than one thought and, to one who examines, them seriously and honestly, often undeniable. Have similar manifestations been discovered between man and the animals? The study of these manifestations, which is very difficult even in the case of man, becomes still more so when we question witnesses doomed to silence. There are, however, some animals which are looked upon as "psychic," which, in other words, seem indisputably to be sensitive to certain subliminal influences. One usually classes the cat, the dog and the horse in this somewhat ill-defined category. To these superstitious animals one might perhaps add certain birds, more or less birds of omen, and even a few insects, notably the bees. Other animals, such as, for instance, the elephant and the monkey, appear to be proof against mystery. Be this as it may, M. Ernest Bozzano, in an excellent article on Les Perceptions psychiques des animaux,[1] collected in 1905 sixty-nine cases of telepathy, presentiments and hallucinations of sight or hearing in which the principal actors are cats, dogs and horses. There are, even among them, ghosts or phantoms of dogs which, after their death, return to haunt the homes in which they were happy. Most of these cases are taken from the Proceedings of the S. P. R., that is to say, they have nearly all been very strictly investigated. It is impossible, short of filling these pages with often striking and touching but rather cumbersome anecdotes, to enumerate them here, however briefly. It will be sufficient to note that sometimes the dog begins to howl at the exact moment when his master loses his life, for instance, on a battlefield, hundreds of miles from the place where the dog is. More commonly, the cat, the dog and the horse plainly manifest that they perceive, often before men do, telepathic apparitions, phantasms of the living or the dead. Horses in particular seem very sensitive to places that pass as haunted or uncanny. On the whole, the result of these observations is that we can hardly dispute that these animals communicate as much as we do and perhaps in the same fashion with the mystery that lies around us. There are moments at which, like man, they see the invisible and perceive events, influences and emotions that are beyond the range of their normal senses. It is, therefore, permissible to believe that their nervous system or some remote or secret part of their being contains the same psychic elements connecting them with an unknown that inspires them with as much terror as it does ourselves. And, let us say in passing, this terror is rather strange; for, after all, what have they to fear from a phantom or an apparition, they who, we are convinced have no after-life and