. Ventilation for dwellings, rural schools and stables. Fig. 10.—Candle extiiiKuishedin air once brentbed. Using again the two-quart Masonjar, Fig. 9, let a lighted candle belowered into it. It burns withscarcely diminished intensity, as(lid the ribbon, for down-going;ind up-going currents maintain acontinuous fresh air supply. Nowwhile the candle is yet burning gentle stream of air from the1 liners be conveyed to tlie bottomof the jar, Fig. 10. Gradually, asthe jar fills, the flame loses inbrilliancy and finally is extin-guished. The Mame in this case is certainly not blown outby the ai
. Ventilation for dwellings, rural schools and stables. Fig. 10.—Candle extiiiKuishedin air once brentbed. Using again the two-quart Masonjar, Fig. 9, let a lighted candle belowered into it. It burns withscarcely diminished intensity, as(lid the ribbon, for down-going;ind up-going currents maintain acontinuous fresh air supply. Nowwhile the candle is yet burning gentle stream of air from the1 liners be conveyed to tlie bottomof the jar, Fig. 10. Gradually, asthe jar fills, the flame loses inbrilliancy and finally is extin-guished. The Mame in this case is certainly not blown outby the air eurrent for the candle may be relighted and again Fig. CaiiilU huriihigpure air. in 16 Ventilation. lowered into the jar after removing the tube. The respiredair is heavy enough to remain and, as the candle is lowered into it, it will be extinguished,even after the lapse of more thantwo minutes if the air in the roomis still. Once more let the candle belighted and lowered into the jar,Fig. 11. Gradually raise the can-dle as the flame shows sig
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectventilation, bookyear
