"Ay," said Paul.

The artist laid down his brush, and swung round on his box, clasping knees. "How the devil did you manage to see that when I didn't?"

"Dun-no!" said Paul.

The young man stretched himself and lit a cigarette.

"What are yo' doing that for, mister?" Paul asked seriously.

"That?"

"Ay," said Paul. "You mun have a reason."

"You're a queer infant," laughed the artist. "Do you really want to know?"

"I've asked yo'," said Paul.

"Well, if you're anxious to know, I'm an architect on a holiday, and I'm sketching any old thing I come across. I don't pretend to be a painter, my youthful virtuoso, and that's why I go wrong sometimes on colour. Do you know what an architect is?"