Evening Republican, Volume 22, Number 140, Rensselaer, Jasper County, 14 June 1919 — Life of Candle Flame. [ARTICLE]

Life of Candle Flame.

Laboratory experiments conducted of late iiave shown that a candle flame will become extinguished when the oxygen content of the atmosphere in which it is burning falls to about 45 per cent. Sulphur stops burning when all but 13.5 per cent of the oxygen in an inclosed space has been exhausted. The case of charcoal, however, Is notable. Combustion continues until only 9 per cent of the oxygen remains.