But guesses are no use without facts.

Look.
Oh, I remember now.

I know now the soil of the field is brown, like the garden; and the soil of the moor all black and peaty.
Yes.

But if you dig down two or three feet, you will find the soils of the moor and the field just the same.

So perhaps the top soils were once both alike.
I know.
Well, and what do you think about it now?
I want you to look and think.
I want every one to look and think.