  He lay motionless,
and listened, scarcely breathing. But nothing stirred, and there was
no sound.  He continued to listen, and wait, during what seemed a long
time, but still nothing stirred, and there was no sound.  So he began
to drop into a drowse once more, at last; and all at once he felt that
mysterious touch again!  It was a grisly thing, this light touch from
this noiseless and invisible presence; it made the boy sick with ghostly
fears.