“Nonsense! Not over one hundred to one-fifty. I'm going on a liberal allowance for error, too. It may not be over seventy-five. The--”

“But if that's as far as it is, why can't we see the other side?”

“With all that chemicalized vapor rising constantly? Who knows what elements may be in it? Or what polarization may be taking place?”

“Polarization?”

“I mean, what deflection and alteration of light? No wonder we can't see! But we can fly! And we're going to, what's more!”

“Going to make a try for Chicago, then?” she asked, her eyes lighting up joyfully at thought of the adventure.

“To-morrow morning, sure!”

“But the alcohol?”

“We've still got what we started with from Detroit, minus only what we've burned reaching this place. And we reckoned when we set out that it would far more than be enough. Oh, that part of it's all right!”

“Well, you know best,” she answered. “I trust you in all things, Allan. But now just look at this roast partridge; come, dear, let to-morrow take care of itself. It's supper-time now!”