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Show SCIENCE SKETCHES ' liiimmiiuii i tiwmrrttii iniiimmiiiHi ! HUNDREDS of hairy, leggy creatures are the central figures in an anatomy study aimed at producing behavioral changes by means 'of radiation. The University of Cincinnati College of Medicine is J : using spiders as subjects. o o a g v NITROGEN, once a virtual waste 1 product of air separation processes, proces-ses, is gaining in importance and in several years will equal that of oxygen, predicts Chemetron Corporation, Chicago. Wider uses of the gas include refrigeration, ij freezing, refining of non-ferrous ; alloys and producing glass and ; processing chemicals. f DRILLING HOLES in the right .places can make load-bearing metal bars that are grooved or notched to fit as parts of a : larger structure up to 70 per cent stronger, say Stanford University scientists. I FLEA CIRCUSES are decreasing in number because of modern man's concern for cleanliness. Peter Mathes, the director of a West Germany flea circus, says, "Modern living conditions, and especially sleeping facilities, are simply unbearable for fleas. t "DEATH RAYS" may soon be helping farmers get rid of insect I pests, reports the Department of t Agriculture. Exposing grain and ! seed to radiofrequency electric I fields makes them deadly to insects. |