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Show VIOLET RAYS PURIFY WATER I USED IN BATHING POOL Ultraviolet rays are being employ- M ed to purify the water used In a big I natatorlum nt n St. Louis amusement J park. Tho water Is taken from tho 1 deepest part of the pool, passed thru m n scries of tutors that remove tho 1 suspended matter, and then subjected 3 to tho bactericidal Influence ot tho I light. Theoretically at least, all tbo 1 germ llfo Is destroyed by this pro- J cess. As tho water passed tho eourc tj ot Illumination it falls In n eweade, ' so that It Is thoroughly aerated bo- t5 fore reaching tho tank below. The Q swimming pool contains somo 400,000 gallons of water which la continual- ly being withdrawn from, one end, m cleansed and returned at tho other 9 oztrcmlty, |