“The phenomena ceased for a few minutes. M. Meurice then asked to be allowed to change places with _X_. This is done; _X_ remains a quarter of an hour in the cabinet, during which time M. Meurice says he sees an oval-shaped light, about three times the size of an egg, floating about on the curtains of the cabinet. _R_ and _M_ see nothing. The medium returns to the cabinet, and _X_ resumes his seat. _Immediately_, large triangular-shaped luminosities are seen by _M_ and _R_ outside the cabinet. _X_ has suddenly fallen asleep. “_M_ and _R_ then see very mobile, amorphous lights, varying from three to nine inches in diameter, floating about _X_’s head for a few seconds; their luminosity is less great than that of the lights seen on the curtains, but is sufficiently pronounced to light up _X_’s forehead. “The phenomena again cease. _X_ awakens. M. Meurice asks Dr. Maxwell to change places with him. The doctor remains in the cabinet for ten minutes: no phenomena; M. Meurice returns to the cabinet, and _M_ resumes his place at Professor Richet’s left. “Very quickly, the same phenomena as before occur. The luminous ray assumes a broad, oval-shaped appearance; it measures about ten or twelve inches by about fifteen inches; it advances a few inches towards the table, and then disappears, to show itself, a few seconds later, larger, rounder in shape, and more brilliant. _M_ and _X_ think they can distinguish the outlines of a human face in this luminosity, but _R_ says it appears amorphous to him. “Shortly after this, _M_ and _X_ see a faintly luminous ball of about six inches in diameter, form outside the cabinet,—on the curtain—approach and float over the table above the experimenters’ hands. _R_ sees this also, but compares it to a luminous fog. _R_ cannot affirm the correctness of his last perception. “Thereupon the seance terminated. “During the production of these phenomena, M. Meurice complained of excessive cold; we heard him shivering, and his teeth chattering. He yawned frequently, and stretched himself repeatedly; he breathed heavily, and constantly complained of feelings of oppression and sea-sickness. “When the seance was over, he complained of intense thirst and drank several glasses of water. “The weather on these three days was very fine, dry, and fresh. “The conclusions arrived at by those who were present at these three seances, are:— “1. That the above-described luminosities were decidedly objective. “2. That no oversight, no error of observation can explain them.” The above _compte rendu_ was drawn up by Professor Richet, Dr. Maxwell and Dr. X. at the end of the seances. _SERIES C_ _By Dr. X._ The reader will, perhaps, kindly forgive a few probably uninteresting but necessary details, before we enter upon the last series of these psycho-physical phenomena.