Spencer Vance, as stated, had adopted his own measures for locating the men; in his earlier life he had been a sailor, and had worked his way up until at the age of nineteen he held the position of second mate on a large schooner; and when he was assigned to the special duty of "piping" the smugglers, his sea experience came in good play, and was of great aid to kiln in his perilous duty. The officer started out on his work by taking passage to the Island of Cuba, and one day in the port of Havana a ragged sailor dropped into a groggery kept by a Frenchman and made himself acquainted with a number of sailors, who were having a good time ashore. The ragged Jack told his own tale, won upon the good-will of the jolly fellows who were in for a good time, and in the end was shipped for New York on a fast-sailing schooner. The detective had an eye on the schooner, and well knew, when as a sea-tramp he shipped on the vessel, he had struck a smuggler. It was a clear starry night when the vessel sighted the Long Island shore after having slipped inward past Fire Island. The detective lay low and watched for some hours. He had known that something unusual was in progress on board the schooner. The captain was below, and one of the mates had charge of the deck; a light shone in the distance, like a red star dancing over the waves, and the men on the schooner moved about in a stealthy manner to and fro across the deck. It was a strange thing to do; why should they tread thus lightly the deck of a ship ten miles off shore, as though their footsteps might be heard? Alas! it was a case of involuntary stealth, a sign of the nervous, trepidation which attends conscious guilt. It did not seem that there could be any danger near; the heavens were clear, the bosom of the deep unruffled even by an evening breeze. Nature called not for the coward tread, and the gleaming eye, the pale face, and the anxious glance hither and thither. No, no; but the smugglers feared another peril. Revenue cutters were known to be cruising along the coast; more than ordinary vigilance was being exercised by a robbed Government. The men upon the schooner knew that the revenue officers were up to many of their tricks and were posted as to many of their signals; false lights might gleam across the waters like an ignis fatuus luring on a famished traveler in the desert, and within the hour after their calling had been betrayed, every man might be in irons, and the cargo and the vessel would be confiscated. A fortune was at stake, and the shadow of a prison loomed out over across the waters and threatened to close in behind them.