6. As they went they met their teacher, who stopped and spoke to them,
so Harry asked her to tell them what bricks really were.

7. 'I wish there were a brick-field near,' she said, 'and then we would
go and see it! But I can tell you a little about it.

8. 'Bricks are made of clay, and clay is dug out of the ground. Men dig
it before winter comes, and let it lie out all the winter, and the frost
breaks it up nicely for them.

9. 'The next thing is to mix it well into a paste, and then it is put
into moulds.'

'What are moulds?' Harry asked.

'Well, these moulds are like boxes with no bottom or top.'

'Only sides, then?' said Dora.

10. 'Yes, they have two long sides, and two short ones, and they hold
the soft, wet clay.

'You may call them clay-puddings before they are put into the hot oven.
When they are taken out, what do you think they are? They are bricks!'

[Illustration]