Chapter VII 
HOW SOME FAMILIAR THINGS LOOK 
UNDER THE MICROSCOPE 
T HE microscope, with its enormous magni¬ 
fying power, has not only made possible 
the discovery of all this world of invisible life 
around us. It has shown us as well, many 
things about the familiar living objects of the 
world we see that we could never have known 
otherwise. We have learned, through its use, 
what plants are made of and how they carry on 
their life processes. We can see the real struc¬ 
ture of the hair and skin and blood of animals 
and human beings through it, and so find out 
how they perform their activities. The human 
eye is not strong enough to see all these things. 
So without the microscope we probably would 
never have learned the many things we know 
about how plants and animals live. 
You all know how a maple leaf looks, for 
What can we 
see through a 
microscope? 
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