"We'll prise it up, sir," exclaimed a petty officer. "The men can then wriggle underneath."

"Won't do," objected the Sub firmly. "It will have to be removed."

Two men advanced with slabs of gun-cotton, but again Dick demurred.

"No explosives to be used in the demolition of obstructions," he ordered. "They must be kept for the enemy's guns. We don't want to alarm the rest of the landing-party. Bend a rope there, and half a dozen of you clap on for all you're worth."

A rope was speedily forthcoming. The stalwart bluejackets, digging their heels into the sloping ground, tugged heroically. The stout wire sagged, quivered, and resisted their efforts.

The Sub realized that the obstruction must be removed. Although it was possible to crawl underneath, as the petty officer had suggested, it would never do to leave a trap like that between the fort and the shore. In the event of an ambuscade and a retirement to the boats, delay in negotiating the entanglements might spell disaster.

Another half a dozen men assisted their comrades. Still the wire, now at a terrific tension, showed no signs of being wrenched from its hold.

"All together—heave!"

With a burly "Heave-ho" the dozen bluejackets made a fresh effort. Balked, they gave a tremendous jerk. Something had to go, but it was not the wire. The rope parted with a crack, and twelve seamen were struggling in a confused heap on the steep hillside, while little Sefton, caught by the human avalanche, found himself head over heels in a particularly aggressive thorn-bush.

"Work round to the right there, and see what the infernal wire is made fast to!" ordered the Sub impatiently. "Look alive there, or the others will be at the top before us."