An electric motor ordinarily dumped the pot into molds, but this motor, like everything else electrical in the plant, now was out of commission. Masters, however, found a block and tackle and rigged it to a beam above the pot. The hook he attached to the bottom of the pot.

"Grab hold, Cap!" he said, taking the end of the rope.

Taylor loosened his tunic and seized the rope.

"Heave!" Masters chanted.

The two men strained. Slowly the pot tilted.

Pember, standing at a window, called out over his shoulder:

"They're coming back!"

Above the creak of the pulleys rose the murmuring whisper of the spheres.

"Heave!" Both men joined in the rhythmic call, putting their weight on the rope. The pot tilted more.

The half-formed sphere whistled loudly and the spheres circling over the plant answered.