t was all black outside. The clouds were black overhead; the highest Lowland crags, several thousand feet beneath us, were all but blotted out in the murky darkness. Only one thing was to be seen: a quarter of a mile ahead, now, and a thousand feet higher than our level, the shining, bird-like outlines of Hanley's hovering little Wasp. It stood like a painted image of an aero, alone on a dead-black background. Red and green signal-lights dotted it, and on its stern tip a small, spreading searchlight bathed the wings and the body with a revealing silver radiance.

Our forward flight had been checked, and we, too, were hovering. Hans doubtless would remain for a time in the pilot cubby; De Boer and Jetta were in the control room. It was only twenty feet away, but I could barely see its oval entrance.

"Gutierrez!"

One of them was calling. My hollow empty voice echoed back as I softly responded:

"Yes?"

"Be ready. We are arrived."

"Yes, Commander. All is well."

I continued to stand at the window. Hanley's little balloon-car was visible now. Then he cut it away. We had moved forward in the interval. The tiny car floated out almost above us.

My gaze searched the void of darkness outside. Did Hanley have an invisible flyer out there? Perhaps so. But it could accomplish nothing as yet. It would not even dare approach, for fear of collision with us.