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Show E juiii ,uuM""ill'll"ll'.'!.g,!.:.',11.!'- juilllM'irrt'Mttr 'liiri "Dili mil nrii u SCIENCE SKETCHES HINTS to climatic variation may come from freshwater clam shells found in prehistoric Indian villages. University of Wisconsin researchers research-ers hope that the composition of the shells will provide clues describing describ-ing past climates and predicting future climatic change. CARBON DIOXIDE, the gas you' jj exhale, is being put to many new s uses. A growing application for j C02 is that of hardening foundry molds, says Cardox, Chicago. Gas is injected into a sand mix, 1 producing molds that can turn 1 put castings as good as shell- I j j molded ones. I THE FOURTH most important public health problem in the U.S. is alcoholism, according to the American Medical Association. It ranks behind heart disease, mental men-tal illness and cancer. ROTARY PISTON FILLER manufactured by Votator, Louisville, can fill up to 72,000 containers per hour. The machine fills from 3 to 20 fluid ounces at each of 36 stations at a maximum rate of 1,200 containers per minute. .ifii-1" ' r..i.-..n- it mm ii una n mtmmim |