Respiration 



been breathed it is no longer able to support 

 flame or to support life. Since a candle goes 

 out any animal would perish, after a more or 

 less prolonged stay. 



From this you will understand how care- 

 fully we must attend to the renewal of air in 

 our houses, and especially in our bedrooms. 

 Let us throw open our windows and allow 

 the pure outside air to pour in. We must 

 keep far from our dwellings any cause of 

 corruption which might affect the air — the 

 chief support of life. In sheepfolds and 

 stables where numbers of animals are kept, 

 the free access of air is indispensable to 

 health ; all the more because the atmosphere 

 is vitiated both by the breath of the animals 

 and by inevitable impurities. To sum up — 

 Air is indispensable to every creature and 

 everything that can affect its purity must be 

 avoided with the greatest care. 



51 



