"I've not ridden that disk since we caught Loki in his secret researches," rumbled the bearded giant. "I've not much desire to repeat the trip, but I suppose it has to be done."

"Here are the lead suits, Jarl Keith," called Odin.

I went to the side of the chamber to which the Aesir king had gone. He had reached down, from hooks on which they hung, two of the four strange garments which had hung there, gathering dust for long. The garments were stiff robes of heavy but oddly flexible lead, falling to the ankles, with leaden boots for the feet and leaden gloves for the hands. A hood-like cowl of the same material went over the head, and had two eye-holes of heavily leaded glass for vision.

"These are the suits which Loki and the thralls he forced to help him used in the fiendish researches below," Odin said. "When Loki was forced to flee Asgard, he had to leave these behind him."

I examined the heavy garments.

"They ought to be proof against any ordinary radiation," I muttered. "But we've got to have something in which to bring back the mass of radioactive matter."

Odin nodded understandingly. "Yon crucible should serve the purpose. Put it on the disk, Thor."

The crucible was a big one of lead, and so heavy that even huge Thor grunted as he lifted it. He staggered with it to the floating disk. It rocked a little as he put the crucible on it, then quieted. Thor and I each donned one of the protective suits. The lead garments were so heavy that I felt crushed, and I could see only dimly through the dark glass of the eye-holes. Odin handed each of us a stout iron staff.

"Thor, you know from long ago how to operate the disk," he told his huge son. "While you are gone, I shall begin converting one of these mechanisms into a generator whose energy may screen us from Loki's storm-cones in the coming battle."

"We'll get the stuff to operate that generator, or not come back," I promised.