"Yes," said José Medina, "we shall see nothing more now for a long while."

They heard no sound in that still night; they saw no gleam of lights. It seemed to Hillyard that æons passed before José touched him on the elbow and pointed downwards.

"Look!" he whispered excitedly.

Right at their very feet the long, grim vessel lay, so near that Hillyard had the illusion he could pitch a stone on to the conning tower. He now held his breath, lest his breathing should be heard. Then the water splashed, and a moment afterwards the submarine turned and moved to sea. They gave it five minutes, and then climbed down to a tiny creek. A rowing-boat lay in readiness there, with one man at the tiller and two at the oars.

"You saw it, Manuel?" said Medina as he and Hillyard stepped in.

"Yes, Señor José. It was very close. Oh, they know these waters!"

The oars churned the phosphorescent water into green fire, and the foam from the stem of the boat sparkled as though jewels were scattered into it by the oarsmen as they rowed. They stopped alongside a little white buoy which floated on the water. The buoy was attached to a rope; that again to a chain. A mat was folded over the side of the boat and the chain drawn cautiously in and coiled without noise. Hillyard saw the two men who were hauling it in bend suddenly at their work and heave with a greater effort.

"It is coming," said one of them, and the man at the tiller went forward to help them. Hillyard leaned over the side of the heavy boat and stared down into the water. But the night was too dark for him to see anything but the swirl of green fire made by the movement of the chain and the fire-drops falling from the links. At last something heavy knocked against the boat's flanks.

"Once more," whispered the man from the tiller. "Now!"

And the load was perched upon the gunwale and lowered into the boat. It consisted of three square and bulky metal cases, bound together by the chain.