hink so?"

"This arrow is different in shape and in structure from the sample we
found this morning."

The boys now noticed the difference.

"Do different tribes make their implements differently?"

"There is just as much difference among savages in the way they make
their weapons and different implements, as among civilized people. Our
customs differ; our manufactured articles are not the same; and
sometimes the manner of using the tools is unlike; and the divergence is
frequently so wide that it has been difficult in many cases to trace the
causes and explain the reasons. Such an instance may be found in the
Chinese way of holding a saw, with the teeth projecting from the sawyer.
For years all tools and machinery made in England could be instantly
recognized by those versed in manufacturing, on account of the bulk, as
their tools were uniformly made larger and heavy, as compared with the
French and American manufacture."

This conclusion verified the Professor's observation, and you may be
sure that the new discovery gave an air of gravity to the camp which it
did not have before.

"I also wanted to say to-day," was the Professor's last remark that
night, "I am satisfied that there is no intimate intercourse between the
different tribes on the island." The boys looked at each other without
questioning, as usual; but the next morning, as soon as George awoke,
his first observation was: "I can't understand what makes you think that
the natives of the different tribes do not associate with each other."

"Simply for the reason that the styles of the arrows differ so greatly.
With them, as with civilized people, the intermingling of the races
should tend to make their tools and implements alike."

The next night, after the evening meal, they sat in the wagon until
late, discussing their future course. It was now fully nine months since
they left home. The thought that their parents and friends would
consider them lost was the hardest thing to bear. Did the boys ever get
homesick? I need not suggest such an idea to make it more real than it
was to them. With beautiful home surroundings, loving parents and
brothers and sisters, absence, uncertainty; the fear that they would
never again be able to return; danger all about them; the belief that
perils still awaited them, which fears were now, in all probability, to
be realized, all these things did not tend to produce a pleasant
perspective to the mind.

But the Pro