three trees to indicate that one of them was different from the other
two.

The eyes of the savages passed over them, one after another, but they
saw no human being hidden within their boughs. Yet Robert at least,
when those four pairs of eyes rested on his tree, felt them burning
into his back. It was a positive relief, when they moved on and began
to hunt elsewhere.

"They will yet bring their canoe much closer," whispered Willet. "It's
too much to expect that they will let us go so easily, and we've got
to keep up the illusion quite a while longer. Don't push on the tree.
The wind is dying a little, and our pace must be absolutely the pace
of the breeze. They notice everything and if we were to go too fast
they'd be sure to see it."

They no longer sought to control their floating support, and, as the
wind suddenly sank very much, it hung lazily on the crests of little
waves.

It was a hard test to endure, while the canoe with the four relentless
warriors in it rowed about seeking them. Robert paid all the price of
a vivid and extremely brilliant imagination. While those with such a
temperament look far ahead and have a vision of triumphs to come out
of the distant future, they also see far more clearly the troubles
and dangers that confront them. So their nerves are much more severely
tried than are those of the ordinary and apathetic. Great will power
must come to their relief, and thus it was with Robert. His body
quivered, though not with the cold of the water, but his soul was
steady.