CHAPTER II. 
THE INFLUENCE OF PLANTS IN ROOMS. 
HE wise Giver of all good tilings lias 
established the close and loving 
inter-dependence of animals and 
plants. Nothing in creation, as we 
all of us who have studied the marvellous works of 
the Almighty know, is ever wasted. Everything has 
its proper use — everything fulfils its allotted pur- 
pose. Plants and animals, for instance, are per- 
petually ministering to each other’s necessities. 
The c vital air’ of animals is oxygen, which gives 
colour to the blood, infuses health into the 
system, and to the countenance of man gives 
the ruddy glow, which is health’s indicator. 
But after we have inspired oxygen, we respire 
what is to us a poison formed by the combi- 
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