Science: Poison Detector

Many an employe, going about his tasks in a manufactory where mercury heating is in process, has found himself suffering unaccustomed ailments. His eyes glaze with fever. Dysentery sets in. The dentist cautions him against pyorrhea, for his teeth are loosening. Finally the doctor orders him to give up work for a long vacation in the country and he recovers. What has occurred in such cases is an insidious mercurial poisoning, the result of inhaling mercury vapors escaped from leaking seams in the apparatus. The illness may be a long time coming...

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