"It looks pretty threatening, Sam," said Uncle Tom. "I don't like the way that cloud comes creeping down. I hope those boys will notice it in time."

"I don't think you need worry about them," replied the assayer. "Young Dick is well able to take care of himself. He knows the signs as well as anybody."

"Well, I hope he'll notice them in time. Going indoors, are you?"

"Yes; if you don't mind, I'll leave you for the present. I have some work I want to finish up. Let me know when it comes pretty close so that I may get my windows shut. It will come with a 'whoop' when it does come."

As the assayer rose to his feet, he observed across the street the proprietor of the corner grocery standing in his doorway with his hands in his pockets.

"Hallo, Jackson!" he called out. "You'd better take in those loose boxes from the sidewalk if you want to save them: there's a big blow coming pretty soon."

"Oh, I guess not," replied the grocer, a fat-faced, self-satisfied man, one of those "dead-sure weather prophets" for whom old Jeff felt such supreme contempt. "I reckon I'll chance it."

He cast a glance skyward, and deceived by the sparkling brilliancy of the sun, he added under his breath, "Big blow! As if any one couldn't see with half an eye that there isn't a sign of wind in the sky."

"All right, Jackson, suit yourself," replied Warren; adding on his part, as an aside to Uncle Tom, "He'll change his mind in about half an hour, if I'm not mistaken."