"Full speed astern!" the Sub yelled; and full speed astern went the engines, her stern shook, and the black mud, churned up from the bottom, swirled for'ard. But not a movement did she make.

"She's right in it, sir," Jarvis, rushing aft, told the Sub; "there's not a foot of water for'ard."

The Sub jumped overboard abreast the wheel.

There was not two feet of water there, and he walked round her bows, pulling his feet out of the sticky mud. He could walk all round her except at the stern. That last swerve she had made had turned the stern right in to the shore, and the dark back of another mud-bank showed not six yards away, just under the surface of the water. He knew, perfectly well, that she would never get off without assistance.

Bullets kept flicking past—Zip! Zip! Ping! Ping! Some struck the water quite close to the boat; another smacked against those new plates round the stern-sheets. Someone was certain to be hit in a moment or two; and the first was the Hired Assassin, who got a bullet through his left arm, and scrambled aft, behind the plates, bleeding like a pig and whimpering with fright.

The engines were still going astern, but quite uselessly. Everybody had to scramble out; most of them did so on the protected side, the side away from the toll-house. "Some of you come this side," the Sub shouted angrily; and the Orphan, Jarvis, and Plunky Bill followed him round. "Now shove her astern! One! two! three! Altogether—one! two! three! Heave!"

They tried a dozen times, but not an inch did she move. It was terrible. Some bullets now began coming from the side opposite to the toll-house, from beyond that gap of water which separated the island on which they were aground from the mainland. They could see some men creeping among some low, scrubby bushes there, and some puffs of rifle smoke. Plunky Bill was ordered to turn the maxim on to them, so climbed on board, swung the gun round, and let "rip" some fifty rounds. Those kept them quiet for a few minutes.

"If Mr. M'Andrew came in, he could tow us on," the Orphan suggested; but the Sub, although he felt sure that it was helpless to think of getting off without assistance, would not signal to ask for it, not yet. He tried making the engines go full speed ahead and then full speed astern, the men all pushing and shoving at the same time. Then they all climbed on board, crowded as far aft as they could, and tried jumping, up and down, in time, whilst the engines went full speed astern. But you might as well have expected to move a house. The picket-boat showed not the slightest sign of coming off.

All this time some ten or twelve rifles were being constantly fired at them from different points in the direction of the toll-house, only about two hundred and fifty or three hundred yards away. Some of these rifles were evidently mausers—they recognized their sharp crack; but several were old-fashioned ones which gave a duller noise when they fired, and their bullets, coming almost simultaneously with the report, made a bigger splash when they hit the water. Also, every now and then, little white wisps of powder smoke drifted up from behind some of those bushes. Those wisps were practically the only "targets" Plunky Bill had to fire at, but occasionally he caught sight of something creeping about among the bushes.

The shooting of these Turks was, of course, execrable; otherwise everyone in the picket-boat must have been killed.