F. 3.--The only Britons yet in arms south of the Tyne were the Ordovices of North Wales, who had lately cut to pieces a troop of Roman cavalry. Agricola marched against them, and, by swimming his horsemen across the Menai Straits, surprised their stronghold, Anglesey, thus bringing about the same instant submission of the whole clan which through the same tactics he had seen won, seventeen years earlier, by Suetonius. F. 4.--But Agricola was not, like Suetonius, a mere military conqueror. He saw that Britons would never unfeignedly submit so long as they were treated as slaves; and he set himself to remedy the grievances under which the provincials so long had suffered. Military licence, therefore, and civil corruption alike, he put down with a resolute hand, never acting through intermediaries, but himself investigating every complaint, rewarding merit, and punishing offences. The vexatious monopolies which previous governors had granted, he did away with; and, while he firmly dealt with every symptom of disloyalty, his aim was "not penalty but penitence" [_nom paena sed saepius paenitentia_]--penitence shown in a frank acceptance of Roman civilization. Under his influence Roman temples, Roman forums, Roman dwelling-houses, Roman baths and porticoes, rose all over the land, and, above all, Roman schools, where the youth of the upper classes learnt with pride to adopt the tongue[183] and dress of their conquerors. It is appropriate that the only inscription relating to him as yet found in Britain should be on two of the lead water-pipes (discovered in 1899 and 1902) which supplied his new Roman city (_Deva_) at Chester.[184] F. 5.--This proved a far more effectual method of conquest than any yet adopted, and Southern Britain became so quiet and contented that Agricola could meditate an extension of the Roman sway over the wilder regions to the north, and even over Ireland.[185] He did not, indeed, actually accomplish either design, but he extended the Roman frontier to the Forth, and carried the Roman arms beyond the Tay. The game, however, proved not worth the candle. The regions penetrated were wild and barren, the inhabitants ferocious savages, who defended themselves with such fury that it was not worth while to subdue them.