It was a long time before the lieutenant could get any one to explain what had happened. The captain, it appeared, had died, and so had most of the officers and the passengers. Their bodies had been thrown overboard. Great was his horror when he at length ascertained that they were suffering from the yellow fever. The weather was very hot, and it was but too likely even that this short visit to the pest-infested ship might cause him to convey it to the crew of the frigate. What, however, was to be done? He could not leave the unfortunate people on board the merchantman to perish by themselves, without help; while, should he remain, he and those with him might catch the same complaint. He found on inquiry that several persons were down below who had hitherto escaped the pestilence. At length, uncertain how to act, he returned on board the Isabel, to receive instructions from his captain. The surgeon of the frigate was of opinion that the only safe plan was thoroughly to fumigate the vessel, and put a prize crew on board, to navigate her to an English port, as it would be unsafe to take any of the people out of her. This plan was followed, and an officer with twelve men went on board to carry the ship to Bristol.

It was hoped that from the short time the lieutenant and his men were on board no infection could have been conveyed from her to the frigate. Before two days, however, had passed these hopes were found to be fallacious. Two of the men who had been on board the merchantman were seized with the fearful complaint, and the following day were corpses. Several others in the course of a few hours were seized in the same manner. Their illnesses in each case terminated fatally. As is often the case, a panic seized the whole crew, and men who would have faced an enemy boldly, trembled at the thoughts of the attacks of this unseen foe. The captain and officers had tried to encourage them and revive their spirits; but all seemed in vain. Not a day passed without several of the men being committed to the deep, and no one knew who would be the next victim. The surgeon declared his belief that the seeds of the disease must have been contracted in the West Indies, as it was impossible it could have been communicated by the people of the merchantman.

“Let the cause be what it may, the best hope we have of getting free of the fever is to meet an enemy of equal size to ourselves; and, then, while we are fighting him, I have no doubt that ‘Yellow Jack’ will take to flight,” observed the captain.

At length a breeze sprang up, and although the disease had not altogether ceased, it had considerably decreased. A sharp look-out was kept at all hours for any sail which might appear on the horizon. At length one was observed in the south-west, and all sail was made in chase. For some time probably the Isabel was not seen by the vessel she was chasing. The latter, however, was at length seen to make sail, and to stand away to the west. The Isabel was a fast vessel, and every effort was now made to increase her speed. The sails were wetted, every stitch of canvas she could carry was set, and every other device adopted to urge her through the water.

In those days the engagements which had taken place between English and French ships had terminated in most instances so disastrously to the latter, that Napoleon, it was said, had ordered all his cruisers to avoid fighting if they possibly could. This might have accounted for the flight of the stranger; for as the Isabel drew nearer, she was discovered to be either a heavy frigate or a line-of-battle ship. On a still nearer approach the French ensign flew out from her peak, and it was ascertained, without doubt, that she was a large frigate, a worthy antagonist for the Isabel. Superior as the enemy might be in guns and in number of men, Captain Denham resolved to attack her. The engagement he knew would be a severe one; but he trusted for victory to the tried gallantry of his officers and crew, and the resolution with which they would work the guns. He had the weather-gauge, and he hoped by skilful manoeuvring to retain it. The enemy finding she could not escape, now hauled up her courses, and made every preparation for battle. The Isabel, when she drew near enough, at once opened fire to cripple her antagonist, and to retain the position she now enjoyed. This first broadside considerably cut up the Frenchman’s rigging; but the fire the Isabel received in return did her still greater damage, badly wounding the fore-topmast. Davis went aloft to examine it, and reported on his return that he feared it would not stand much longer. Both the frigates now standing on a wind, continued to exchange broadsides; the English firing at the hull of their antagonist, while the Frenchman seemed to aim more particularly at cutting up the masts and rigging of the English ship.

“She seems to be full of men, and I suspect her object is to get alongside, and to take us by boarding,” observed the captain to his first lieutenant.

“We will show them what British steel can do if they make the attempt, sir,” was the answer.

The Frenchman attempted to luff across the English ship’s bow, in the hopes of raking her, but Denham was too much on the watch to allow her to execute this manoeuvre successfully. A considerable number of the Isabel’s men had been killed. Still, her crew fought on with undaunted courage. At length, her fore-topmast, which had before been severely injured by a chain shot, came down with a crash upon the deck. The Frenchmen shouted when they saw this, and another shout escaped them when they saw the main-topmast follow the fate of the other mast.

“If they attempt to run us on board we will try to secure them, as we did in the Cynthia,” observed the captain. “If we let a few of the Frenchmen come on board, we can quickly dispose of them, and then return the compliment.”

“Ay, ay, sir,” answered the lieutenant; “I will give the order to the men to prepare for boarding. They are ready enough for it.”