. Ventilation for dwellings, rural schools and stables. Fip. 8.—Mnffiicsium ribbonburning in rospiivd air. Cninpoxitint of til4 Atniosjtfnrc. Dry air: Carl)on dloxldo Oxytren Nlti-o^tMi and othor trasts. Air, humidity 7.) i)er rent: CarJK)n dioxide OxykcM Nitrotren and other 14 Ventilation. On the average, in the case of man, it is found that oncerespired air has lost oxygen to the extent of volumeper cent. It has acquired volume per cent of carbondioxide and has become saturated with moisture at the tem-perature of the respired air, while its volume has been in-crea
. Ventilation for dwellings, rural schools and stables. Fip. 8.—Mnffiicsium ribbonburning in rospiivd air. Cninpoxitint of til4 Atniosjtfnrc. Dry air: Carl)on dloxldo Oxytren Nlti-o^tMi and othor trasts. Air, humidity 7.) i)er rent: CarJK)n dioxide OxykcM Nitrotren and other 14 Ventilation. On the average, in the case of man, it is found that oncerespired air has lost oxygen to the extent of volumeper cent. It has acquired volume per cent of carbondioxide and has become saturated with moisture at the tem-perature of the respired air, while its volume has been in-creased by the expansion due to the rise in of these changes reduces the absolute amount of oxy-gen which may enter the lungs in a given time when the airis respired again, unless the depth or frequency of breath-ing is increased. The changes in composition which come to once breathedair are indicated in the next table, where dry air and that75 per cent saturated with moisture before breathing arethe basis of computation. Composition of pure air and of that once breathed. Pure air, cubic inches per cu. ft. Air breathed. cubic inches per cu. ft. Chang-e,cubic inches Dry air: Oxyg-en .506 —95.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectventilation, bookyear
