THE generator rumbled and roared, building up to its maximum speed. The whole laboratory quivered from its vibration. The dynamo hummed and whined and the night silence outside seemed to make the noises within more deafening. Tommy Reames ran his eyes again over the power-leads to the monstrous, misshapen coils. Professor Denham bent over one of them, straightened, and nodded. Tommy Reames nodded to Evelyn, and she threw the heavy multiple-pole switch. There was a flash of jumping current. The masses of metal on the floor seemed to leap into ungainly life. The whine of the dynamo rose to a scream and its brushes streaked blue flame. The metal things on the floor flicked together and were a tube, three feet and more in diameter. That tube writhed and twisted. It began to form itself into an awkward and seemingly impossible shape, while metal surfaces sliding on each other produced screams that cut through the din of the motor and dynamo. The writhing tube strained and wriggled. Then there was a queer, inaudible snap and something gave. A part of the tube quivered into nothingness. Another part hurt the eyes that looked upon it.