character to travel fifty miles in a night, and I have known
them to walk with such dignity that it took them ten years to go ten
miles."

"But there must be some way of getting across it!" exclaimed Tommy.
"Everything has been going all right up to now, and we're not going to
be kept away from the cabin by any such playful little earthquake as
this!"

"We'll do the best we can," Frank said gravely.

The boys turned to the east and west and traversed the line of the chasm
for long distances. In places the width was not more than thirty feet.
In others it was at least a hundred. Occasionally the walls of soil and
ice sloped down at an angle of forty degrees, in other places the wall
was vertical.

Within an hour the sound of running water was plainly heard, and the
boys understood that the convulsion of nature had opened a reservoir
somewhere in the glacier, and that the long chasm would soon become a
rushing torrent. The prospect was discouraging.

"I wish we had an airship!" suggested Tommy, as they came back to the
starting place, a few minutes before the night closed down upon the
moraine. "It's provoking to think that we can't get across a little
chasm not any wider than a street in old Chicago!"

"I think I could get along very well with a derrick!" said Sam.

After a long conference, it was decided to keep to the west and endeavor
to pass around the chasm in that direction.

"We certainly can't remain here inactive," the doctor argued. "We've got
to go one way or the other, and I think the chances are better toward
the west!"

"It will soon be good and dark," cried Tommy, "and then we'll have to
make some kind of a camp for the night."

"I've got a searchlight with me," suggested Frank.

"So've I," answered Tommy.

"I'll tell you one thing we forgot," Sam cut in. "You didn't make
Jamison give up your automatics!"

"Don't you ever think we didn't," Tommy answered. "That is," he
continued, "the officer made him give them up. At least he brought them
back when he came from the jail!"

"Seems to me," Tommy added, looking at Frank critically, "that you've
got some kind of a drag with the people at Cordova."

"Never mind that now," Frank replied. "What we need now is some kind of
a drag to get us across this chasm."

The electrics illuminated only a narrow path, but the boys and the
doctor made fairly good time as they advanced toward the west.

After walking at least a mile and finding no narrowi