Page:Works of Jules Verne - Parke - Vol 6.djvu/302

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282
THE SECRET OF THE ISLAND

to establish a dam at the two openings made by the lake, and by which were fed Creek Glycerine and Falls River.

The colonists worked with a will, and the two dams which besides did not exceed eight feet in width by three in height, were rapidly erected by means of well-cemented blocks of stone. This work finished, it would have been impossible to guess that at that part of the lake, there existed a subterranean passage through which the overflow of the lake formerly escaped.

Of course the little stream which fed the reservoir of Granite House and worked the lift, had been carefully preserved, and the water could not fail. The lift once raised, their comfortable retreat would be safe from any surprise.

This work was so quickly finished that Pencroft, Gideon Spilett, and Herbert found time to make an expedition to Port Balloon. The sailor was very anxious to know if the little creek in which the Bonadventure was moored, had been visited by the convicts. "These gentlemen," he observed, "landed on the south coast, and if they followed the shore, I fear they may have discovered the little harbor. In that case, I wouldn't give half-a-dollar for our Bonadventure."

Pencroft's apprehensions were not without foundation, and a visit to Port Balloon appeared to be very desirable. The sailor and his companions set off on the 10th of November, after dinner, well armed. Pencroft, ostentatiously slipping two bullets into each barrel of his rifle, shook his head in a way which betokened nothing good to anyone who approached too near to him, whether "man or beast," as he said. Gideon Spilett and Herbert also took their guns, and about three o'clock all three left Granite House.

Neb accompanied them to the turn of the Mercy, and after they had crossed, he raised the bridge. It was agreed that a gun-shot should announce the colonists' return, and that at the signal Neb should return and re-open the road across the river.

The little band advanced directly along the road which led to the southern coast of the island. This was only a distance of three miles and a half, but Gideon Spilett and his companions took two hours to traverse it. They examined all the border of the road, the thick forest, as well