They kept along the stone wall, dodging in and out through the trees, and ascending a hill.

Presently it dawned on Clint that the stone wall, like the brook, was having fun with them.
For, instead of running straight, as one would expect any decent stone wall to run, it was bending all the time to the west.

Clint knew it was the west because the sun was disappearing there; perhaps _had_ disappeared by now.

He acquainted Amy with the discovery and they crawled across the wall again and found themselves in a worse tangle of briers than before.

But they were desperate now.