"The numerous stories told of ghosts, or the spirits of persons who are dead, will in most instances be found to have originated in diseased imagination, aggravated by some abnormal defect of mind. We may mention a remarkable case in point, and one which is not mentioned in English works on this subject; it is told by a compiler of Les Causes Celebres. Two young noblemen, the Marquises De Rambouillet and De Precy, belonging to two of the first families of France, made an agreement, in the warmth of their friendship, that the one who died first should return to the other with tidings of the world to come. Soon afterwards De Rambouillet went to the wars in Flanders, while De Precy remained at Paris, stricken by a fever. Lying alone in bed, and severely ill, De Precy one day heard a rustling of his bed curtains, and turning round, saw his friend De Rambouillet, in full military attire. The sick man sprung over the bed to welcome his friend, but the other receded, and said that he had come to fulfill his promise, having been killed on that very day. He further said that it behooved De Precy to think more of the afterworld, as all that was said of it was true, and as he himself would die in his first battle. De Precy was then left by the phantom; and it was afterward found that De Rambouillet had fallen on that day." "Ah," I said, "and so the phantom predicted an event that followed as indicated." "Spiritual illusions," explained the Professor, "are not unusual, and well authenticated cases are not wanting in which they have been induced in persons of intelligence by functional or organic disorders. In the last case cited, the prediction was followed by a fulfillment, but this was chance or mere coincidence. It would be strange indeed if in the multitude of dreams that come to humanity, some few should not be followed by events so similar as to warrant the belief that they were prefigured. But here is an illustration that fits your case: let me read it: