"Why don't you get more?"

He flashed me one of his pale, genial smiles. "I'm thinkin' of it, Homer, soon's I get some money in. Next week, mebbe. There's a man in N'York that mebbe can be int'rested in one of my inventions, Roland Barnette says. Mebbe he'd be willin' to put a little money in it, Roland says, and of course if he does, I'll be able to stock up considerable."

I sighed covertly for him. He rubbed, humming a tuneless rhythm to himself.

"Roland's goin' to write to him about it."

"What invention?" I asked, incredulous.

Sam put down his bottle of polish and came round the counter, beaming; nothing pleases him better than an opportunity to exhibit some one of his innumerable models. "I'll show you, Homer," he volunteered cheerfully, shuffling over to his work-bench. He rasped a match over its surface and applied the flame to a small gas-bracket fixed to the wall. A strong rush of gas extinguished the match, and he turned the flow half off before trying again. This time the vapour caught and settled to a steady, brilliant flame as white as and much softer than acetylene.

"There!" he said in triumph. "What d'ye think of that, Homer?"

"Why," I said, "I didn't know you had an acetylene plant."

"No more have I, Homer."

"But what is that, then?" I demanded.