The king of Sweden, with his usual success having passed the Boristhenes, encountered a party of 10,000 Muscovites and 6000 Calmuck Tartars; but they gave way on the first onset and fled into a wood, where the king, following the dictates of his great courage more than prudence, pursuing them, fell into an ambuscade, which, throwing themselves between him and three regiments of horse that were with him, hem'd him in, and now began a very unequal fight.--Many of the gallant Swedes were cut to pieces, and the Muscovites made quite up to his majesty:--two aid-de-camps were killed within his presence, his own horse was shot under him, and as an equerry was presenting him with another, both horse and man was struck dead in the same moment.--Horatio immediately alighted in order to mount the king, who now on foot behaved with incredible valour, in that action was surrounded and taken prisoner, as were several others that had fought near his person. He had the satisfaction, however, while they were disarming and tying his hands, to see colonel Dardoff with his regiment force thro' the Calmucks, and arrive timely enough to disengage the king, after which the army recovering its rank, and pouring in upon the enemy, he was not without hopes of regaining his liberty; but he was sat upon a horse and bound fast to the saddle, and compelled, with the others that were taken with him, to accompany the Muscovites in their flight, so was ignorant in what manner this re-encounter ended. Soon after repairing to the czar's quarters, these unfortunate officers of the king of Sweden were, with some others who had before become their prize, sent under a strong guard to Petersburgh, and thrown altogether into a miserable dungeon. It would be impossible to describe the horrors of this place:--light there was, but it was only so much as just served to shew to each of these unhappy sufferers the common calamity of them all.--The roof was arched indeed, but so low, that the shortest among them could scarce stand upright:--no kind of furniture, not even straw to cover the damp earthen floor, which served them for a seat by day and bed at night. Inured as they had been to hardships, the noisomeness of this dreadful vault killed many of them, and among the rest a young Swedish officer named Gullinstern, one with whom Horatio had contracted a very intimate friendship, and who, for his many excellent qualities, had been so dear to the king, that seeing him one day greatly wounded, and in danger of being taker, prisoner, that generous prince obliged him to mount on his own horse, and fought on foot himself till another could be brought.