And Caius saw the first man slowly raise his hand as if in an attitude of oath-taking, and the second man did likewise.

O'Shea turned round and faced him, speaking hastily.

The shadow of the cloud was sending dark shudderings of lighter and darker shades across the sand hollow, and these seemed almost like a visible body of the wind that with searching blast drifted loose sand upon them all.

With the sweep of the shadow and the wind, Caius saw the movement of the lifted hand go down the line.
"I lay my loife upon it," said O'Shea, "that if ye'll say on yer honour as a man, and as a gintleman, that ye'll not look behoind ye, ye shall go scot-free.

It's a simple thing enough; what harm's there in it ?" The boy had come near behind Caius.