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Show Luminous House Numbers. One of the most disconcerting experiences ex-periences of the city dweller Is that of searching In the dark for a house number. num-ber. If the hour Is late, the situation Is especially embarrassing, for the innocent in-nocent visitor is llablo to be mistaken for a prowler. But thanks to science, the old days are past, and the time is not far distant dis-tant when probably every city house will be numbered with figures which are easily readable on the darkest night and at a considerable distance. A Chicago concern has adapted the use of luntiDOus radium to house numbering num-bering signs, and the Idea is being received re-ceived with great favor by the public. The first cost is reasonable, and there Is no upkeep cost, the sign being self-luminous self-luminous and requiring no attention. The product is guaranteed to show light in the dark for five years, although al-though the actual life is much longer. |