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Rh of one of those present, and be transferred telepathically to the rest. In the latter case, the vision may have no objective significance, and may testify to no reality. It is obvious that, in the case of apparitions representing the dead, we have no criterion which will enable us to decide between these alternative explanations. At most, we can determine upon which side the balance of probability lies, by considering the whole of the evidence.

In the first place, then, we may note that collective visions are occasionally concerned with inanimate objects—e. g., a chair, or a skeleton,—or with animals. We have several cases in which apparitions of animals, a cat, or a bull, have been seen by two witnesses simultaneously. We have also many cases of lights seen collectively. We have an interesting experimental case in which two young ladies saw the same imaginary scene in a crystal—pyramids and a train of camels.

Further, it will be seen from the Census table that nearly half the human apparitions seen represented persons unknown to the percipients. Again, collective apparitions of the living, which constitute more than three fourths of the recognised apparitions shown in the table, are not as a rule seen under circumstances such as to suggest the agency of the person represented. A typical case is quoted in the Census Report. Two sisters, playing the harmonium in an empty church, saw the