extraneous but inseparable from it; and I am very far from supposing that my book is to settle the question even with a single mind. All I hope or expect is to show that the question is not disposed of yet, either by the rationalists or the physiologists, and that it is still an open one; and all I desire is to arouse inquiry and curiosity, and that thus some mind, better qualified than mine to follow out the investigation, may be incited to undertake it. Dr. Kerner mentions the case of a lady named Dillenius, who was awakened one night by her son, a child six years of age; her sister-in-law, who slept in the same room, also awoke at the same time, and all three saw Madame Dillenius enter the room, attired in a black dress, which she had lately bought. The sister said, “I see you double! you are in bed, and yet you are walking about the room.” They were both extremely alarmed, while the figure stood between the doors in a melancholy attitude with the head leaning on the hand. The child—who also saw it, but seems not to have been terrified—jumped out of bed, and running to the figure, put his hand through it as he attempted to push it, exclaiming, “Go away, you black woman.” The form, however, remained as before; and the child, becoming alarmed, sprung into bed again. Madame Dillenius expected that the appearance foreboded her own death; but that did not ensue. A serious accident immediately afterward occurred to her husband, and she fancied there might be some connection between the two events. This is one of those cases which, from their extremely perplexing nature, have induced some psychologists to seek an explanation in the hypothesis that other spirits may for some purpose, or under certain conditions, assume the form of a person with a view to giving an intimation or impression, which the gulf separating the material from the spiritual world renders it difficult to convey. As regards such instances as that of Madame Dillenius, however, we are at a loss to discover any motive—unless, indeed, it be sympathy—for such an exertion of power, supposing it to be possessed. But in the famous case of Catherine of Russia, who is said, while lying in bed, to have been seen by the ladies to enter the throne-room, and, being informed of the circumstance, went herself and saw the figure seated on the throne, and bade her guards fire on it, we may conceive it possible that her guardian-spirit, if such she had, might adopt this mode of warning her to prepare for a change, which, after such a life as hers, we are entitled to conclude she was not very fit to encounter.