“That all?” laughed the other, who apparently saw nothing of particular consequence about such a common happening; “it may perhaps manage to slow us down more or less; but what does that matter, when we’ve got time to burn. The Big Boss told us, remember, not to hurry things at all—plenty of time, oodles of money, and any backing we chose to call for in the way of a new boat, or more helpers. We should worry, old scout!”

“’Tain’t that in peticular Jack,” complained the other; “but of all things a sky detective’s got to run smack up against, fog’s the one I despise most. It’s got me in bad more’n a few times, so I’ve grown to look on the peasoup stuff like it was my—er, what-dye-call it—Nebraska, no, I mean Nemesis.”

“Yes, now you mention it, Perk, I remember you telling me something about that strange feeling you have creep over you. No need for you to apologize—in my knocking around among airmen I’ve found that often even the most daring and reckless in the bunch had some kind of a weakness, if only you looked far enough under the surface; just as sometimes you’ll find a boasting bully actually afraid of his little wife at home, who’s smacked him with her handy rolling pin many a time.”

“Huh! wasn’t I a canvas man ’long with a travelin’ circus a wheen o’ years ago, an’ didn’t I see the biggest elephant in captivity rear up on his hind legs, lift his trunk sky-high in the air, an’ squeal like fun just when a little half grown mouse happened to run along near his alley. Well, I’m the tusker, an’ fog is the mouse, as you might say—we never do get on well as a combine. Hope it hugs the ground, an’ leaves us a clear track up among the clouds I c’n see creepin’ up ahead yonder.”

“Doesn’t bother me a whit, partner; don’t forget we’ve got that new radio beacon aboard to try out; and if it’s as clever as I’ve heard tell it’ll carry us along our route to Orleans through the thickest nest of fog anybody ever stacked up against. Naturally we can’t expect to get the full benefit of its capacity to hold a speeding plane on its true course; because the invention’s hardly more than half baked up to now; but I set it according to directions, and if at any time we begin to slide off our course the light that springs up is bound to give warning.”

“A bully good layout I’d say, if it c’n do what they claim,” ventured Perk, who undoubtedly had read certain things concerning the new invention, and was eager to learn just how it would pan out. “You showed a level head, partner, when you decided to take the offer o’ that gent in Atlanta, and try the thing out. Guess, then, I needn’t bother my head ’bout gettin’ astray; if things keep bein’ invented it ain’t goin’ to be very long till a pilot’ll get slapped good an’ hard if he misses runnin’ on a straight line, or even veers from his proper course in a great big blow.”

“We’re living in a machine age, Perk, and every day things are heading that way on the run—electric helps in kitchen, factory, and even aboard our air cruisers. While the brainwork and strain grow harder the actual manual labor is lessened all the time. But as you say it’s getting a bit hazy, and chances are we’re in for a spell of blue fog.”

Ten minutes afterwards there could not be the least doubt concerning that fact, for by degrees even the stars vanished from view, ditto the gorgeous round moon. Still, since the sky remained brighter in the east, it was not at all difficult to tell where the fair mistress of the Southern night had hidden her face behind the opaque veil.

Jack was now flying by instruments alone, since never a thing could be seen by the keenest eye above, below—they seemed to be hung in unlimited space; but pushing along with considerable speed just the same, bound for the distant city on the vast Mississippi, situated not so very far from its delta.

Thus passed a full hour.