As for luminous phenomena, I cannot help wondering how some of them could have been simulated. In order to give a precise physiognomy of the conditions under which they were observed, I will briefly relate one of the most curious seances of the series. There were about a dozen persons present. Five or six sat down to the table, and raps were obtained, now on the table, now on the floor. Obscurity was asked for and gradually given. The phenomena increased in intensity as the darkness deepened. When we could no longer see, the usual levitations, violent knocking, and displacement of furniture had their own way. The seance was discontinued for a few minutes, and resumed towards eleven o’clock. The table requested that the medium might be placed in the cabinet, which was in a corner of the room, and made of white curtains. The medium was placed as requested. The table then asked the experimenters to withdraw from the vicinity of the cabinet; when giving these directions, the table appeared to strike the floor of its own accord. It told us to seat ourselves at a distance of 6 feet from the cabinet, and then asked us to sing. We droned out the air, ‘Frère Jacques, dormez-vous?’ At the end of ten or fifteen minutes, milky-looking phosphorescent lights were seen on the curtains of the cabinet; then luminous hands appeared. One very luminous hand rose rapidly outside the curtains and seized a bell, which had been hooked on to a nail at about 7 feet 6 inches above the floor. This hand was visible to every one. Then the milky-lights were again seen, larger and more brilliant than before. One of these lights, the outlines of which were very indistinct, floated about the room, and withdrew to about 9 feet from the cabinet, along the wall opposite the one near which the experimenters were grouped. This light appeared to be 4 feet above the ground; it was about 3 feet high by 10 inches broad, and appeared to float in the air. It remained visible for several seconds. Afterwards, other lights were seen near the curtains; finally, one extremely brilliant light appeared above the curtains near the ceiling. This light was about 1 foot 6 inches high by 1 foot 2 inches wide. The outlines of this luminosity were more clearly defined than those of the light which floated about the room. These phenomena were clearly visible to every one. Some of the experimenters thought they could see shadowy forms in these lights. As for me, I could distinguish no human appearance therein. The first light I described gave me the impression of a luminous pillar; the second, whose outlines were better defined, awakened no idea of any definite form. We ceased experimenting shortly after this seance.