signs at me from the entrance to the control room. Both of them looked as sick as cats. I heard a laugh, a shrill, rasping sort of laugh, from the forward end of the bright cruiser, and I looked in that direction.

I saw a short man, bald headed, with frog eyes peering at us from behind thick prismatic glasses. He was clad in baggy green overalls, and was slowly waving in our direction a glistening metal tube which he held in both hands. From the end of the tube emanated a purplish light.

"You were clever, my good young friends," he chortled, "to think of fighting with your hands, but you were not quite quick enough. Not to-day goes anyone in my cruiser! What do you think of the enervating ray, heh? Ingenious, not? Ludwig Leider discovered it. I am Ludwig Leider. You shall come with me and with your own eyes watch the de-energizing of New York and Paris and Berlin. For I am ready to do away with your paltry Earth now!"

I felt the last energy ooze out of me and I sunk, all in a heap, on the floor of Ludwig Leider's cavern.