ore, take two seconds to travel one way. Do you
understand?"

"Oh, yes; that is perfectly clear."

The land now became more rolling, and was occasionally broken by
ravines; and sometimes they had difficulty in getting their yaks and
wagon across and over the rough ground.

Fallen trees were numerous; there were little mounds here and there,
made by the remains of uprooted trees, which had long ago decayed, all
of which made their traveling laborious and slow.

Here wild animals became more abundant, and wild game was found on every
side. Several good shots by the boys replenished their larder with bird
meat.

"See that bear!" cried Harry in great excitement.

The boys, as well as the Professor, were out with their guns at once.
"Follow him up quickly now," and the Professor could hardly keep pace
with them. The bear did not seem to be greatly frightened, and when
Harry, who was ahead, stopped and aimed his gun for a shot, he was less
than a hundred feet away. The shots from the two boys came close
together, and bruin stopped in surprise, then, with a snarl, turned
around and in a lumbering, shuffling movement started for the boys.

If either shot had taken effect it was not noticeable. The boys turned
to run, one going to the right and the other to the left. This did not
seem to disconcert him in the least, as he went right on. He had seen
the Professor, who stopped and sprang to one side and bringing up his
gun awaited the charge of the bear.

The boys, encouraged by the tactics of the bear in avoiding them, turned
again, because they now appreciated that the Professor was in the bear's
path.

"Don't shoot, boys; let him come nearer."

When he came within fifteen feet the Professor fired, and the boys also
shot. The bear reared up, gave a terrific growl and again shambled
forward, this time making a beeline for the wagon. This was too much for
the yaks; they turned, almost upsetting the wagon, and Baby commenced to
shriek in the most approved fashion.

[Illustration: _Fig 3. THE BEAR_]

Neither George nor Harry could wait any longer. They followed and rushed
past the Professor, who now had the only loaded gun.

"Take this, Harry; your guns are not loaded."

Harry turned and grasped it and without stopping went in pursuit. Before
he had reached the former location of the wagon the animal ran into a
tree, which threw him back on his haunches, and after several efforts to
raise himself, fell over on his