But electric light is sometimes given off by the human body itself, not merely from the hair. A memorable instance of this phenomenon is recorded by Dr. Kane in the journal of his last voyage to the Polar regions. He and a companion, Petersen, had gone to sleep in a hut during intense cold, and on awaking in the night, found, to their horror, that their lamp--their only hope--had gone out. Petersen tried in vain to get light from a pocket-pistol, and then Kane resolved to take the pistol himself. "It was so intensely dark," he says, "that I had to grope for it, and in so doing, I touched his hand. At that instant the pistol--in Petersen's hand--became distinctly visible. A pale bluish light, slightly tremulous, but not broken, covered the metallic parts of it. The stock, too, was distinctly visible as if by reflected light, and to the amazement of both of us, also the thumb and two fingers with which Petersen was holding it--the creases, wrinkles and circuit of nails being clearly defined upon the skin. As I took the pistol my hand became illuminated also." This luminous and doubtless electric phenomenon took place in highly exceptional circumstances, and is the only case recorded in recent times. But a far more remarkable phenomenon of a similar kind is mentioned by Bartholin, who gives an account of a lady in Italy, whom he rightly styles _mulier splendens_, whose body became phosphorescent--or rather shone with electric radiations--when slightly rubbed with a piece of dry linen. In this case the luminosity appears to have been normal, certainly very frequent under ordinary circumstances, and the fact is well attested. Mr. B. H. Patterson mentions in the journal _Belgravia_ (Oct., 1872), that he saw the flannel with which he had rubbed his body, emit blue sparks, while at the same time he heard a "crackling" sound. These facts prove that the human body even in ordinary life, is capable of giving out luminous undulations, while science teaches us that they appear quite frequently in disease. Here again, Dr. Phipson mentions several cases as the result of his reading. One of these is that of a woman in Milan, during whose illness a so-called phosphoric light glimmered about her bed. Another remarkable case is recorded by Dr. Marsh, in a volume on the "Evolution of Light from the Human Subject," and reads thus: "About an hour and a half before my sister's death, we were struck by luminous appearances proceeding from her head in a diagonal direction. She was at the time in a half-recumbent position, and perfectly tranquil. The light was pale as the moon, but quite evident to mamma, myself, and sisters, who were watching over her at the time. One of us at first thought it was lightning, till shortly afterwards we perceived a sort of tremulous glimmer playing around the head of the bed, and then, recollecting that we had read something of a similar nature having been observed previous