ULTRA-VIOLET RAYS.
INTERESTING SCHOOL EXPERIMENT. (Received Thursday, 7.35 p.m.) LONDON, October 6. Following on an interesting health tpst, the Smethwick Education Committee has decided to equip a number of selected schools with vitaglass windows, allowing the passage of ultraviolet rays. The new glass was installed in a single class room nine months ago, and a class of boys aged nine to eleven was the subject of careful observation. The test showed that all the pupils gained considerably more height, weight and colouring matter in their blood than boys in an adjoining class room with ordffiary glass windows which cut out the ultra-violet rays almost completely.—(A. and N.Z.)
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Wairarapa Age, 8 October 1926, Page 5
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107ULTRA-VIOLET RAYS. Wairarapa Age, 8 October 1926, Page 5
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