Barnstable listened attentively, and with increasing concern, for he well knew that his cockswain possessed a quick and almost unerring judgment of the weather, notwithstanding the confused medley of superstitious omens and signs with which it was blended; but again throwing himself back in his boat, he muttered:
"Then let it blow; Griffith is worth a heavier risk, and if the battery can't be cheated, it can be carried."
Nothing further passed on the state of the weather. Dillon had not ventured a single remark since he entered the boat, and the cockswain had the discretion to understand that his officer was willing to be left to his own thoughts. For nearly an hour they pursued their way with diligence; the sinewy seamen, who wielded the oars, urging their light boat along the edge of the surf with unabated velocity, and apparently with untired exertions. Occasionally, Barnstable would cast an inquiring glance at the little inlets that they passed, or would note, with a seaman's eye, the small portions of sandy beach that were scattered here and there along the rocky boundaries of the coast. One in particular, a deeper inlet than common, where a run of fresh water was heard gurgling as it met the tide, he pointed out to his cockswain, by significant but silent gestures, as a place to be especially noted. Tom, who understood the signal as intended for his own eye alone, made his observations on the spot with equal taciturnity, but with all the minuteness that would distinguish one long accustomed to find his way, whether by land or water, by landmarks and the bearings of different objects. Soon after this silent communication between the lieutenant and his cockswain, the boat was suddenly turned, and was in the act of dashing upon the spit of sand before it, when Barnstable checked the movement by his voice:
"Hold water!" he said; "'tis the sound of oars!"
The seamen held their boat at rest, while a deep attention was given to the noise that had alarmed the ears of their commander.
"See, sir," said the cockswain, pointing towards the eastern horizon; "it is just rising into the streak of light to seaward of us--now it settles in the trough--ah! here you have it again!"