immy's prediction was fulfilled.
Without the slightest warning the jam "pulled." Usually certain
premonitory _cracks_, certain sinkings down, groanings forward,
grumblings, shruggings, and sullen, reluctant shiftings of the logs give
opportunity for the men to assure their safety. This jam, after
inexplicably hanging fire for a week, as inexplicably started like a
sprinter almost into its full gait. The first few tiers toppled smash
into the current, raising a waterspout like that made by a dynamite
explosion; the mass behind plunged forward blindly, rising and falling
as the integral logs were up-ended, turned over, thrust one side, or
forced bodily into the air by the mighty power playing jack-straws with
them.
The rivermen, though caught unaware, reached either bank. They held
their peavies across their bodies as balancing-poles, and zig-zagged
ashore with a calmness and lack of haste that were in reality only an
indication of the keenness with which they fore-estimated each chance.
Long experience with the ways of saw-logs brought them out. They knew
the correlation of these many forces just as the expert billiard-player
knows instinctively the various angles of incident and reflection
between his cue-ball and its mark. Consequently they avoided the centers
of eruption, paused on the spots steadied for the moment, dodged moving
logs, trod those not yet under way, and so arrived on solid ground. The
jam itself started with every indication of meaning business, gained
momentum for a hundred feet, and then plugged to a standstill. The
"break" was abortive.
Now we all had leisure to notice two things. First, the movement had not
been of the whole jam, as we had at first supposed, but only of a block
or section of it twenty rods or so in extent. Thus between the part that
had moved and the greater bulk that had not stirred lay a hundred feet
of open water in which floated a number of loose logs. The second fact
was, that Dickey Darrell had fallen into that open stretch of water and
was in the act of swimming toward one of the floating logs. That much we
were given time to appreciate thoroughly. Then the other section of the
jam rumbled and began to break. Roaring Dick was caught between two
gigantic millstones moving to crush him out of sight.
An active figure darted down the tail of the first section, out over the
floating logs, seized Darrell by the coat-collar, and so burdened began
desperately to scale the very
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