The actual situation was this: on the islet were a dozen convicts, of whom some were no doubt wounded, but who had still a boat at their disposal; on the island were six, but who could not by any possibility reach Granite House, as they could not cross the river, all the bridges being raised.

“Hallo,” exclaimed Pencroft as he rushed into the Chimneys, “hallo, captain! What do you think of it, now?”

“I think,” answered the engineer, “that the combat will now take a new form, for it cannot be supposed that the convicts will be so foolish as to remain in a position so unfavorable for them!”

“They won’t cross the channel,” said the sailor. “Ayrton and Mr. Spilett’s rifles are there to prevent them. You know that they carry more than a mile!”

“No doubt,” replied Herbert; “but what can two rifles do against the brig’s guns?”

“Well, the brig isn’t in the channel yet, I fancy!” said Pencroft.

“But suppose she does come there?” said Harding.

“That’s impossible, for she would risk running aground and being lost!”

“It is possible,” said Ayrton. “The convicts might profit by the high tide to enter the channel, with the risk of grounding at low tide, it is true; but then, under the fire from her guns, our posts would be no longer tenable.”

“Confound them!” exclaimed Pencroft, “it really seems as if the blackguards were preparing to weigh anchor.”