He and his brother-in-law, the wild young Duke of Holstein, turned the town upside down. They snapped cherry pits at the king's gray-bearded councillors, and smashed in the windows of the staid and scandalized burghers of Stockholm. They played ball with the table dishes, and broke all the benches in the palace chapel. They coursed hares through the council-chambers of the Parliament House, and ran furious races until they had ruined several fine horses. They beheaded sheep in the palace till the floors ran with blood, and then pelted the passers-by with sheep's heads. They spent the money in the royal treasury like water, and played so many heedless and ruthless boy-tricks that the period of these months of folly was known, long after, as the "Gottorp Fury," because the harum-scarum young brother-in-law, who was the ringleader in all these scrapes, was Duke of Holstein-Gottorp.

But at last, even the people—serfs of this boy autocrat though they were—began to murmur, and when one Sunday morning three clergymen preached from the text: "Woe to thee, O land, when thy king is a child," the young sovereign remembered the counsels of his good mother and recalled the glories of his ancestors, saw how foolish and dangerous was all this reckless sport, turned over a new leaf, became thoughtful and care-taking, and began his career of conquest with the best victory of all—the conquest of himself!

But though he curbed his tendency to profitless and hurtful "skylarking," he had far too much of the Berserker blood of his ancestors—those rough old vikings who "despised mail and helmet and went into battle unharnessed"—to become altogether gentle in manners or occupation. He hated his fair skin, and sought in every way to tan and roughen it, and to harden himself by exposure and neglect of personal comfort. Many a night was passed by the boy on the bare floor, and for three nights in the cold Swedish December he slept in the hay-loft of the palace stables, without undressing and with but a scanty covering.

So he grew to be a lad of seventeen, sturdy, strong, and hardy, and at the date of our story, in the year 1699, the greater part of his time was given up to military exercises and field sports, with but little attention to debates in council or to the cares of state.

Among his chief enjoyments were the sham fights on land and water. Many a hard-fought battle was waged between the boys and young men who made up his guards and crews, and who would be divided into two or more opposing parties, as the plan of battle required. This was rough and dangerous sport, and was attended often with really serious results. But the participants were stout and sturdy Northern lads, used to hardships and trained to physical endurance. They thought no more of these encounters than do the boys of to-day of the crush of football and the hard hitting of the base-ball field, and blows were given and taken with equal good nature and unconcern.

One raw day in the early fall of 1699, sturdy young Arvid Horn, a stout, blue-eyed Stockholm boy, stripped to the waist, and with a gleam of fun in his eyes, stood upright in his little boat as it bobbed on the crest of the choppy Maelar waves. He hailed the king's yacht.

"Holo; in the boat there! Stand for your lives!" he shouted, and levelled his long squirt-gun full at the helmsman.

Swish! came the well-directed stream of water plump against the helmsman's face. Again and again it flew, until dripping and sore he dropped the tiller and dashed down the companion-way calling loudly for help.

Help came speedily, and as the crew of the king's yacht manned the rail and levelled at their single assailant the squirt-guns, which were the principal weapons of warfare used in these "make-believe" naval engagements, the fun grew fast and furious; but none had so sure an aim or so strong an arm to send an unerring and staggering stream as young Arvid Horn. One by one he drove them back, while as his boat drifted still nearer the yacht he made ready to spring to the forechains and board his prize. But even before he could steady himself for the jump, another tall and fair-haired Stockholm lad, darting out from the high cabin, rallied the defeated crew and bade them man the pumps at once.

A clumsy-looking fire-engine stood amidship, and the crew leaped to its pumps as directed, while the new-comer, catching up a line of hose, sprang to the rail and sent a powerful stream of water straight against the solitary rover.