The long arm stretched out and barred the way.

“Where do you want to go?”

It was clear that he was not aware I knew everything. All right! Perhaps it was necessary that it should be so. From above him, in a deliberately significant tone I said:

“I am the Builder of the Integral and I am directing the test flight. Do you understand?”

The arm drew away.

The saloon. Heads covered with bristles, gray iron bristles, and yellow heads, and bald, ripe heads were bent over the instruments and maps.

Swiftly, with a glance, I gathered them in with my eyes, off I ran, back along the long passage, then through the hatch into the engine-room. There it was hot from the red tubes, overheated by the explosions; a constant roar,—the levers were dancing their desperate drunken dance, quivering ceaselessly with a barely noticeable quiver; the arrows on the dials.... There! At last! Near the tachometer, a notebook in his hand, was that man with the low forehead.

“Listen,” I shouted straight into his ear (because of the roar), “Is she here? Where is she?”

“She? There at the radio.”

I dashed over there. There were three of them, all with receiving helmets on. And she seemed a head taller than usual, wingy, sparkling, flying like an ancient walkyrie, and those bluish sparks from the radio seemed to emanate from her,—from her also that ethereal, lightning-like odor of ozone.