WHAT PL,ANTS ARE ) MADE) OP 
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feeling which told you that you were part of this wide, 
sweet out-of-doors? Have you not felt as though the 
leafy bramble before you, the grass under your feet, the 
thrush singing overhead, were friends of yours, and you 
understood them, and they you ? At such times you have 
not dared, I think, to pluck so much as one yellow butter¬ 
cup, for fear of hurting something that is part of you. 
And now you know that it is part of you, that we are 
all one big family, animals and plants and people, because 
we come from the same beginning, the same protoplasm. 
Of course, it does not do to make too much of this bond 
between the animals and the plants; in no sense are the 
plants related to you as you are related to your aunt or 
your cousin. It is only in the beginning, the very earliest 
beginning, before the protoplasm has grown or developed 
or divided, that plant protoplasm is the same as animal 
protoplasm. The instant it begins to grow, it takes on 
special features which mark it for a plant or an animal. 
Give a cell from a rose leaf and a cell from your skin to 
the man with the microscope, and he can tell at a glance 
which is which. That is because they are grown-up cells, 
cleverly fashioned and adapted for their own special 
kinds of work. There is one sign which always betrays 
a green plant cell—chlorophyll, that magic green fluid 
which absorbs the sunlight. Not one animal in the world 
