Tiny motes hovered even there, where the smallest of visible specks was a ten-man cruiser. And one of the biggest of the aircraft came gingerly up to the very inner edge of the lattice-work of fog and hung motionless, holding itself aloft by powerful helicopter screws. Men were working from a trailing stage--scientists examining the barrier even hexynitrate would not break down.
* * * * *
Thorn set to work. He had come toilsomely to the neighborhood of the rocket-ship because he would