Every time the gun was discharged on board the cruiser, it became necessary to fall off her course just a point or two in order to get a proper aim, and her captain was quick to see the disadvantage of this, as he was only assisting the slaver to widen the distance between them. It would seem to the uninitiated to be the easiest thing possible to cripple the brigantine by a few well directed shots, but when sailing in the wake of an enemy this is by no means so easily done. Besides, the distance between the two vessels, which was considerable, was momentarily increasing. Notwithstanding that the broad spread of canvas on board the slaver made her a conspicuous mark, still, so far as could be seen or judged of by her movements, she remained untouched by half a dozen shots, more or less, which the cruiser sent after her as she slipped away from her big adversary. We could even see that the sweeps were now taken in, showing that the master of the slaver considered the game to be in his own hands. "The brigantine steers due south," said our friend, rubbing his hands together eagerly. "She will lead the Frenchman a wild goose chase among the Cayman Isles, where he will be most likely to run aground with his heavy draught of water. The sea round about for leagues is underlaid by treacherous coral reefs. We shall see, we shall see," he reiterated. "But they must certainly have a good pilot on board the cruiser," we ventured to say. "Undoubtedly," replied Don Herero, "but the brigantine is built with a centre-board, thus having, as it were, a portable keel, and can sail anywhere that a man could swim, while the cruiser, with all her armament, must draw nearly three fathoms. A ship will sometimes follow a chase into dangerous water." "True," we responded, "the brigantine's safety lies in seeking shoal water." "You are right, and that will be her game."