“They must have crossed the bridge on the shore,” replied the engineer, “which one of us must have forgotten to close.”
“True,” said Spilett, “I remember having left it open.”
“A fine job you have made of it, Mr. Spilett,” cried the sailor.
“What is done cannot be undone,” replied Cyrus Harding. “We must consult what it will now be best to do.”
Such were the questions and answers which were rapidly exchanged between Harding and his companions. It was certain that the bridge had been crossed, that the shore had been invaded by animals, and that whatever they might be they could by ascending the left bank of the Mercy reach Prospect Heights. They must therefore be advanced against quickly and fought with if necessary.
“But what are these beasts?” was asked a second time, as the yelpings were again heard more loudly than before. These yelps made Herbert start, and he remembered having heard them before during his first visit to the sources of the Red Creek.
“They are colpeo foxes!” he exclaimed.
“Forward!” shouted the sailor.
And all arming themselves with hatchets, carbines, and revolvers, threw themselves into the lift and soon set foot on the shore.
Colpeos are dangerous animals when in great numbers and irritated by hunger, nevertheless the colonists did not hesitate to throw themselves into the midst of the troop, and their first shots vividly lighting up the darkness made their assailants draw back.