After three hours had slid past Mr. Briggs began to sweep the sea with his glasses, standing in the stern-sheets, with the tiller between his knees. He had run down his fifteen miles of southing, but the blue horizon line was without a speck to mar it.
He decided to risk stretching his orders a bit by keeping on his course for another hour or so. The breeze still held and he could stand back for the Roanoke with free sheets and oars out. He knew that if the boats of the Restless should drift beyond the steamer lanes or trans-Atlantic routes, days and even weeks might pass without their being sighted or picked up.
The perplexed officer was on the point of giving up the search when his keen eye caught sight of a faint smudge between sea and sky. It looked like a tiny fragment of cloud, but it might be smoke. He ordered his men to their oars, and the boat increased her speed.
"If it is a steamer's smoke she may have rescued them," said he; "if not, it may be the yacht, still afloat."
The ashen-colored smudge of smoke grew in size as they steered toward it until it became a trailing banner.
"No funnels could make all that mess," shouted Mr. Briggs, as he flourished his glasses. "That is the bonfire, and it must be pretty near the end of it. I'm surprised that she's stayed afloat this long."
He was a good prophet, for while he stared, the smoke suddenly spread skyward like a huge fan, hung for a moment, and then vanished, except for tattered fringes of vapor that drifted slowly to leeward.
"That's the end of her," cried Mr. Briggs. "She blew up and sank with one big puff. Her boats ought to be sighted before long."
There was no more thought of returning to the Roanoke empty-handed. The men rowed like mad, as if they were matched in a race for life, not realizing that the smoke had been sighted a good ten miles away. It was near sunset when Mr. Briggs had a glimpse of a white dot far ahead which he took to be a boat. As they pulled nearer, he saw that it was a life-raft covered with men who were paddling with oars and bits of plank. It was easy work to get alongside and pass them a line in such calm weather as this.