The daily morning journal and courier., 1904-07-11

head, and the person unded experiment is asked to think hard and to stop thinking at intervals, without telling what he is doing. The card shows eve ry time by it's brightening Of course the trial is made in darkened rooml when the mind is busy; when it is idle the sulphate of calcium becomes dim.
 Not only the nerves, but the muscles of the body give of ''N'' rays when un- I der tension. Apparently the human body stores these rays, and 1t is the same way with the lower animals, such las dogs, rabbits and frogs. Inanimate substances Of certain kinds, such as glass and quartz. exhibit the same phe- nomena, but wood, paper and alumi- mum do not possess the property. One great source of the rays is the sun, and some Of the objects on which they fall become saturated with them. When any of these objects is subjected to strain it emits the rays.
 Thus, when a piece of glass or iron is bent or subjected to pressure it gives Ito the arrangement of the particles lcomposing it, is at all times in a state of strain, and on that account is con tinually giving off the rays. Nor does the period during which it may do this appear to have any limit, a sword lsblade of the time of Charlemagne be- ing found by Professor Blondiot to ex- hibit the phenomena. Silver, lead and glass are first rate storage receptacles for "N'' rays. They will not pass through pure water, which is so opaque | to them that cigarette paper mois- tened with fresh. water will stop them.
 On the other hand, salt water is per- fectly transparent to. them, and so, likewise, are wood and quartz as well as rock salt
 l The rays have no effect on the pho- tographic plate. They are not visible
 to the eye, unless under conditions not I yet acertafned. In other words, they produce no sensation of light. Never
 theless when they are thrown upon the
 eye, in a half darkened room, objects in
 view become more clearly visible. They appear also, in some mysterious Eway, to Increase the acuteness of the
 senses of taste. smell and hearing.
 w HEfl, d ndll-udItAEllC0a IO0lllJ lilC
 blade of knife is placed near the eye
 of the observer, the .N'' rays emitted l by it enable him to. see objects more clearly. If it be applied to the side of the head, the distinctness of objects
 seen is augmented. These are only one Tor two of Professor Blondiot's recent
 experiments, which, when carried fur ther, may be expected to yield some as- tonishing results. He has found that the rays can be transmitted by cop- lper wire, which makes an excellent con- lductor for them. Thus, if they have any relation to telepathy, the time may yet arrive when thoughts can be tele- :l graphed. sf
 The sN'' rays are a part of the invisi- Ible sunshine They belong among the trays in the extreme ultra violet far
 beyond theupper end of the visible so-
 lar spectrum By means of his won- lderful instrument called the ''bolorne-
 ter Professor s. P. Langley has sue- lceeded in making a photographic chart fof the region of invisible light beyond
 the violet, and has pursued his explo-
 ration in this direction so far that the lpath he has covered represents d dis
 tance of thirty feet on a scale in which the visible spectrum of colors, as throw by big prism, is only three feet long. The prism is of rock salt, mathematicaIly cut, this material being
 transparent to the ultra violet rays
 whereas the dearest glass Is opaque to
 them. In the region of unknown col iors thus explored lie the wonderful N Trays. Professor Langley has turned his
 "boIometer" upon them, and before long something much more definite
 than is now known may come to be un.
 derstood about them and concerning Ithe curious phenomena for which they lare accountable. Chicago Tribune.