stream flowing like a sheet of silver down between the bushes and
trees. A minute more, and they came in sight of the bridge.

"Stop!" said Sam. "I may be mistaken, but that bridge looks shifted to
me."

"So it does," returned Tom, and brought the automobile to a
standstill. Both boys leaped out and walked forward.

To inspect the bridge in the bright moonlight was easy, and in less
than a minute the boys made a startling discovery, which was to the
effect that the opposite end of the structure had been thrown from its
supports and was in danger of falling at any instant.

"This is mighty bad," was Sam's comment. "Why, Tom, this is positively
dangerous. If anybody should come along here----"

"Hark!" Tom put up his hand, and both boys listened. From the top of
the hill they had left but a moment before, came the sounds of an
approaching automobile. An instant later the rays of the headlights
shot into view, almost blinding them.

"We must stop them!" came from both boys simultaneously. But scarcely
had the words left their lips, when they saw that such a course might
be impossible. The strange automobile was coming down the hill at a
furious rate. Now, as the driver saw the Rovers' machine, he sounded
his horn shrilly.

"He'll have a smash-up as sure as fate!" yelled Sam, and put up his
hand in warning. Tom did likewise, and also yelled at the top of his