9. 'The heat under the bottom of the sea still kept up, and made the mud
very hot, and baked it through. At last it gave a great push, and heaved
the mud up above the water, so that it became dry land.
10. 'In other ways it was made harder and harder, until it was turned
into rock. And now we call it slate. Here is a bit of your old broken
slate. See if you can turn it into mud again!'
CHALK.
PART 1.
a-cross'
morn'-ing
chalk'-ing
picked
piece
teach'-er
black'-board
spread'-ing
wheat
col'-ours
fetch
laughed
earth
brown
moist
through
1. A few days after this, Dora and Harry were going across the fields.
They saw a horse and cart standing, and a man taking white stones out of
the cart and putting them over the ground.
2. 'Why, it is Joe!' they cried, as they came nearer. 'Good-morning,
Joe. What are you doing?'
'Chalking this bit of land, you see. You know what chalk is, do you?'
3. Harry and Dora picked up a piece or two.
'Teacher writes on the blackboard with chalk,' they said.
'Yes, you are right. It is used for many things,' and he went on
spreading it over the field.
4. 'But what is it wanted here for, Joe?'
'No chalk, no wheat!' said Joe.
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