It was a few days after this, on the afternoon of the 23d of September, as the four ships were working their way gradually to the southward along the English coast, that Jones's opportunity at length arrived. He had just passed Flamborough Head, a long promontory jutting out in the North Sea, when he descried a sail coming out beyond the point to the northward, then another, and another, then more, by twos and threes, until at last there were fifty of them. Fifty of the enemy's merchant-vessels in plain sight! It seemed almost too good to be true, for this was the great fleet of Baltic trading-ships, which it was the dearest wish of Jones's heart to meet. In an instant he had hoisted the signal to attack them; but presently the headmost merchant-ships, seeing the advancing enemy, put about and made off under the land, followed by the others like a flock of frightened geese. Two of the vessels alone kept on their course, and it was presently discovered that these were ships of war convoying the fleet,--the fine 18-pounder frigate "Serapis," just from the dock-yard, under Captain Pearson, and a smaller vessel, the "Countess of Scarborough." These two vessels stood gallantly out to sea to get between the convoy and Jones's squadron. Jones held on his course to meet them; but Landais, either from cowardice or treachery, disobeyed the commodore's signals, and sailing off, left him in the lurch. The "Vengeance" being too small to be of any service, and the "Pallas" engaging the "Countess of Scarborough," the "Bon Homme Richard" was left to fight the "Serapis" alone. It was seven o'clock in the evening when the first shots were exchanged between the two frigates, and for three hours, under the bright moonlight of a clear September night, the battle raged between them with unremitting fury. At first Jones tried to get into a good position across the enemy's bow; but the "Serapis" was a much faster vessel than the "Richard," and easily evaded her. After manoeuvring for a time the two vessels got foul, and Jones with his own hands made fast the jib-stay of the "Serapis" to his mizzen-mast. At the same time the English vessel's anchor hooked in his quarter, and the "Serapis" having let go her other anchor, the two ships, firmly lashed together, swung side by side to the single cable.