,
wandered on and finally drifted apart. Harry stood alone for a while on
the outskirts of the throng. They were all singing again, and the mighty
volume of sound rolled through the wood. It was not only a singular,
it was a majestic scene also to Harry. How like unto little children
young soldiers were! and how varied and perplexing were the problems of
human nature! They were singing with the utmost fervor of Him who had
preached continuously of peace, who was willing to turn one cheek when
the other was smitten, and because of their religious zeal they would
rush the very next day into battle, if need be, with increased fire and
zeal.

He saw a heavily built, powerful man on the outskirts, but some distance
away, singing in a deep rolling voice, but something vaguely familiar in
the figure drew his glance again. He looked long and well and then began
to edge quietly toward the singer, who was clothed in the faded butternut
uniform that so many of the Confederate soldiers wore.

The fervor of the singer did not decrease, but Harry noticed that he too
was moving, moving slowly toward the eastern end of the grove, the same
direction that Harry was pursuing. Now he was sure. He would have
called out, but his voice would not have been heard above the vast volume
of sound. He might have pointed out the singer to others, but, although
he felt sure, he did not wish to be laughed at in case of mistake.
But strongest of all was the feeling that it had become a duel between
Shepard and himself.

He walked slowly on, keeping the man in view, but Shepard, although he
never ceased singing, moved away at about the same pace. Harry inferred
at once that Shepard had seen him and was taking precautions. The
temptation to cry out at the top of his voice that the most dangerous
of all spies was among them was almost irresistible, but it would only
create an uproar in which Shepard could escape easily, leaving to him a
load of ridicule.

He continued his singular pursuit. Shepard was about a hundred yards
away, and they had made half the circuit of this huge congregation.
Then the spy passed into a narrow belt of pines, and when Harry moved
forward to see him emerge on the other side he failed to reappear.
He hastened to the pines, which led some distance down a little gully,
and he was sure that Shepard had gone that way. He followed fast,
but he could discover no sign. He had vanished utterly, like thin smoke
swept aw