His operations on the stormy element of the seas were conducted with so much decision and energy, and at the same time with so much system and plan, that his power rapidly extended.

He brought the other sea kings under his control, and established quite a maritime empire.

He made more and more distant excursions, and at last, in order to avenge himself upon the Franks for their interposition in behalf of his enemy at home, he passed through the Straits of Dover, and thence down the English Channel to the mouth of the Seine.

He ascended this river to Rouen, and there landed, spreading throughout the country the utmost terror and dismay.

From Rouen he marched to Paris, finding no force able to resist him on his way, or to defend the capital.