Harry found that the stump had roots that spread out all round for a long way.
'How thick and hard they are!' he said; 'come and feel this one!'
'It is not like the roots we saw on the ivy,' she said. 'Now look at the top of the stump. It is all marked in rings.'
'In the very middle there is a little light spot, and then come dark rings, and then more rings outside. Father once told me these rings showed how old the trees were. And do you see lines coming away from the middle?'
'The look like the rays of the sun, which I draw on my slate,' said Dora. 'What a rough coat this tree had! Come and feel the outside of the log.'
'That is the bark! I have heard father talk about bark.'
Well, I shall call it the coat. It is the tree's overcoat to keep him warm and dry. But trees do not all seem to have rough coats. Look at that one!' and she ran over to a little birch, and pulled off some of its thin bark.

License information: nan
MPAA: G
Go to source: http://www.gutenberg.org/files/18217/18217-h/18217-h.htm#A_TREE