ean I can see the thing blowing up a fire when you use it, any man
could see that--but its the workings of it. What's the arrangements
and internal works of the bellows now, Daniel?

DANIEL. Well, you push the handles together in an ordinary bellows
and--and the air--blows out. (_Seeing that this statement is received
coldly._) Now, why does it blow out?

JOHN (_disappointedly_). Because it's pushed out of course. There's no
sense in asking that sort of a question.

DANIEL. Well, there's a flap on the bellows--a thing that moves up and
down. Well, that flap has all to do with pushing the air.

JOHN. Maybe this scientifican business is uninteresting to you, Sarah,
is it?

DANIEL (_brightening up at the suggestion_). I'm sure it is. Perhaps
we better stop.

SARAH (_smiling grimly_). Oh, not at all. I want to hear more.

MACKENZIE. You're wasting a lot of my time, Mr. Murray. I came here to
hear about a fan bellows.

DANIEL (_confusedly_). Oh, yes. Yes. Certainly. Fan bellows. There's a
difference between a fan bellows and an ordinary bellows.

MARY (_opening door from yard and coming in_). Oh, Uncle Dan, are you
explaining it to them. Did I miss much of it?

MACKENZIE. I don't think it matters much what time you come in during
this.

JOHN (_impatiently_). Go on, Daniel.

DANIEL. It's very hard for me to go on with these constant
interruptions. Well, I was just saying there was a difference between
a fan bellows and an ordinary bellows.

MACKENZIE. Now, what is a fan bellows yourself, Mr. Murray?

DANIEL (_hopelessly_). A fan bellows? Ah. Why now is it called a fan
bellows?

MACKENZIE (_roughly_). Don't be asking me my own questions.

DANIEL (_with a despairing effort_). Well, now we will take it for
granted it is because there must be something of the nature of a fan
about a fan bellows. It is because there are fans inside the casing.
And the handle being turned causes these--eh--fans to turn round too.
And then the air comes out with a rush.

JOHN. Aye. It must be the fans that pushes it out.

DANIEL. Exactly. Well, now, the difficulty we find here is--(_he
pauses_).

ANDY. Aye.

JOHN. Go on, Daniel.

DANIEL. You want a constant draught blowing. That's number one.
Then--well--the other. You see, if we took some of these fans.

MACKENZIE. Yes.

DANIEL (_in a floundering way_). And put them in a tight-fitting case,
and put more of them inside, and understood exactly what their size
was, we c