Arizona republican., 1902-01-03

table. knocking over both table and sand. When he picked up the magnet q quantity of the black grains were sticking to it, proving that there was iron in the sand. From this accident has grown the present enormous deVel- opment of low grade iron ore. which is powdered first and then passed be- tween magnets which extract the metal.
 An Austrian engineer was shooting one day in the salt marshes of Istria. He was thirsty and could find no drink ing water. Presently he came to q tree growing on the edge of the marsh, and in q hollow of the trunk was water brackish, but drinkable. II was rot rain water for the hollow was covered in. so he concluded that the water had been sucked up from below and the salt extracted by the trunk. From this idea has been evolved an invention most valuable to all sailors-a wooden filter by which salt water can be made fresh without the use of slow and eX- pensive condensers.
 One of the earliest lessons we all learn is that man has five senses. It is now certain that he has six, and the discovery was made because the pa tient of a London doctor fell down some steps on a scraper and injured his ear. An operation was necessary and part of the organ was removed. When the patient recovered he could hear pretty well, but on shutting his eyes he was unable to restrain his equilibrium. Further experiments have put it beyond doubt that there is d sixth sense possessed by man. and far more strongly by birds. This sense lies between seeing and hearing. and is the sense of balance, or, as scientists call il, the static sense. A curious proof of this static sense by lower animals is that a blind cat can and will run and jump; while q cat whose sense of hear ing is gone seems absolutely afraid to move at anything more than walk. and will never jump.
 One of the worst diseases known to- day is lockjaw. The gern of it lives in the earth, and no one who cuts himself badly is safe from this evil little mi crobe. Not only is the Iockjaw nicrobe widely dispersed. but it is most diff cult to kill, for it can stand extremes of heat and cold and dryness which would destroy most ether disease germs. One day the Italian doctcr Per nossi, who had been experimenting with a culture of tetanus microbes in boullion. was called away. and left his phlal oi germs on table by the win dow. The sun had been full upon it for some hours when he came back. and 10 his surprise the deadly mixture had been deprived of all it's poisonous prop critics. The red-light treatment for smallpox, which has saved many Il poor sufferer from hideous and dishguring scars. is another of these boons for which the world must thank mere chance. During tine epidemic Of small poX in 1894, when Queen Mary died of it. it was noticed that the only patient whose face was unmarked was one of the ladies of the court whose room had red blinds. This was put on record. and now. two centuries later. has led to the experiments of Dr. Fuislu who has dis covered that red light is actually bene- ficial, but that the blue rays of sun light are injurious to the diseased skin. Red blinds, by cutting off blue rays. titus save the patient from injury Seattle Post-Inteliigencer