"You'll have your chance," Russ told him. "We're just starting. I wanted to be sure I had something before I troubled you. I tried other things with that first sphere. I found that metal pushed through the sphere will conduct an electrical current, which is pretty definite proof that the metal isn't within the sphere at all. Glass can be forced through it without breaking. Not flexible glass, but rods of plain old brittle glass. It turns without breaking, and it also loses some of its length. Water can be forced through a tube inserted in the sphere, but only when terrific pressure is applied. What that proves I can't even begin to guess." "You said you experimented on the first sphere," said Manning. "Have you made others?" Russ rose from his chair. "Come on in, Greg," he said, and there was a grin on his face. "I have something you'll have to see to appreciate." * * * * * The apparatus was heavier and larger than the first in which Russ had created the sphere of energy. Fed by a powerful accumulator battery, five power leads were aimed at it, centered in the space between four great copper blocks. Russ's hand went out to the switch that controlled the power. Suddenly the power beams flamed, changed from a dull glow into an intense, almost intolerable brilliance. A dull grumble of power climbed up to a steady wail. The beams had changed color, were bluish now, the typical color of ionized air. They were just power beams, meeting at a common center, but somehow they were queer, too, for though they were capable of slashing far out into space, they were stopped dead. Their might was pouring into a common center and going no farther. A splash of intensely glowing light rested over them, then began to rotate slowly as a motor somewhere hummed softly, cutting through the mad roar and rumble of power that surged through the laboratory. The glowing light was spinning more swiftly now. A rotating field was being established. The power beams began to wink, falling and rising in intensity. The sphere seemed to grow, almost filling the space between the copper blocks. It touched one and rebounded slightly toward another. It extended, increased slightly. A terrible screaming ripped through the room, drowning out the titanic din as the spinning sphere came in contact with the copper blocks, as force and metal resulted in weird friction. With a shocking wrench the beams went dead, the scream cut off, the roar was gone. A terrifying silence fell upon the room as soon as the suddenly thunking relays opened automatically. * * * * * The sphere was gone! In its place was a tenuous refraction that told where it had been. That and a thin layer of perfectly reflective copper ... colorless now, but Manning knew it was copper, for it represented the continuation of the great copper blocks.