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found in your body is also found in every other living 
thing, you may learn to feel that you are in a way 
a sister or brother, not only to all other boys and girls, 
but to all the animals and to every plant about you. 
HOW A PLANT) 1S-BUILSs 
OW we know that the plant, like yourself, began 
life as a single cell; and we know that the perfect 
plant was built up by the power which this cell had of 
giving birth to other cells with like power. 
Suppose that a brick were laid upon the earth as the 
foundation of a wall; and suppose that this brick were 
able to change into two bricks. Suppose that the new 
brick were able to form another brick in the same man- 
ner, and that this power should pass from brick to 
brick; and suppose that all these bricks were able to 
arrange themselves one upon another in an orderly 
fashion, so that they could not easily be moved from 
their places. 
Now, if you can see this brick wall growing up, you 
can see something of how the cells of a plant grow 
up and arrange themselves. 
But though it is fairly easy to see how the plant 
cells form one from another, that does not explain how 
they come to make a plant, with its many different 
parts, with its root and stem, its branches, leaves, and 
flowers. 
One thing can divide and make two things of ‘the 
