Vibrations, Major--I pin my faith to vibrations." "Vibrate all you want to!" exclaimed the Celt, irefully, his eyes on the thickening swarm of flyers, some of them now plainly visible in detail against the aching smears of color flung across the eastern reaches of cloudland.

"Vibrate away; but give me _this_!" He fondled the gleaming gun as if it had been a pet.

"I tell you frankly, if I were in charge here, I'd let the vibrations go to Hell and begin pumping lead.

I'd have all gun-crews at stations, and the second we got in range I'd open with all six Lewises!" "Yes, and Nissr would go crumpling down, a minute later, a blazing sieve fore-and-aft--wings, tanks, fuselage, everything riddled with thousands of bullets.

Vibration is the trick, I tell you.