t seemed, as our flight retarded further, that I could distinguish the intervals when in the winter these trees were denuded. There would be naked branches; then, in an instant, blurred and flickering forms of leaves. Sometimes there were brief periods when the gray scene was influenced by winter snows; other times it was tinged by the green of the summers.

"750, Migul.... Hah! You know what to do if Harl dares to follow and stop simultaneously?"

"Yes, Master."

"It will be pleasant to have him dead, eh, Migul?"

"Master, very pleasant."

"And Tina, too, and that young man marooned in 1777!" Tugh laughed. This meant little to Mary and me; we could not suspect that Larry was the man.

"Migul, this is 761."

The Robot was at the door. I murmured to Mary to brace herself for the stopping. I saw the dark naked trees and the white of a snow in the winter of 761; the coming spring of 762. And then the alternate flashes of day and night.

The now familiar sensations of stopping rushed over us. There was a night seconds long. Then daylight.

We stopped in the light of an April day of 762 A. D. There had been a forest fire: so brief a thing we had not noticed it is we passed. The trees were denuded over a widespread area; the naked blackened trunks stood stripped of smaller branches and foliage. I think that the fire had occurred the previous autumn; in the silt of ashes and charred branches with which the ground was strewn, already a new pale-green vegetation was springing up.