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Show MaMBBHaaanMMHMaaaMaBaaHaaMaaHBaaiaaBaHi A Chemical Fire Alarm, A flro alarm cartrldgo is now usod in Sweden. Heat sufllclont to molt n parafftne capsule Uboratos a fow drops of sulphrlo acid, which trickles down upon and unites a mixturo of potassium chlorate and sugar. This In turn sets flro to a powerful light, and by molting molt-ing a fusible metal plug closes an electric elec-tric circuit at) muasls t ttlstaat bsUL A small coppor ease, cldsod with rubber rub-ber cap, contains tho chemicals. ' |