But the visit of the Romans to Britain on this occasion lasted but three days, for a violent storm scattered the ships with the horses on board.

"The same night," says Cæsar, "it happened to be full moon, which generally causes very high tides in the ocean, a fact of which our men were not aware."

Indeed, we may well believe that a night of full moon and an unusually high tide would be a mystery to those children of the Mediterranean. Their ships had been beached and were lying high and dry when the rapidly rising tide overwhelmed them. Cables were broken, anchors lost, panic ensued.

But Cæsar's glory lay in overcoming obstacles, and it is well known how he got his troops and ships safely back across the Channel, and how preparations were hurried on in Gaul for a second invasion of Britain. This is not the place for the story of his campaign. He was the first to raise the curtain on the mysterious islands discovered by Pytheas.

"Far to the west, in the ocean wide,
Beyond the realm of Gaul, a land there lies,
Sea-girt it lies, where giants dwelt of old."

Cæsar's remarks on this new-found land are interesting for us to-day. He tells us of "a river called the Thames, about eight miles from the sea." "The interior of Britain," he says, "is inhabited by a people who, according to tradition, are aboriginal. The population is immense; homesteads closely resembling those of the Gauls are met with at every turn, and cattle are very numerous. Gold coins are in use, or iron bars of fixed weight. Hares, fowls, and geese they think it wrong to taste; but they keep them for pastime or amusement. The climate is more equable than in Gaul, the cold being less severe. The island is triangular in shape, one side being opposite Gaul. One corner of this side, by Kent—the landing-place for almost all ships from Gaul—has an easterly, and the lower one a westerly, aspect. The extent of this side is about five hundred miles. The second trends off towards Spain. Off the coast here is Ireland, which is considered only half as large as Britain. Halfway across is an island called 'Man,' and several smaller islands also are believed to be situated opposite this coast, in which there is continuous night for thirty days. The length of this side is eight hundred miles. Thus the whole island is two thousand miles in circumference. The people of the interior do not, for the most part, cultivate grain, but live on milk and flesh-meat, and clothe themselves with skins. All Britons, without exception, stain themselves with woad, which produces a bluish tint. They wear their hair long."

Cæsar crossed the Thames. "The river can only be forded at one spot," he tells us, "and there with difficulty." Farther he did not go. And so this is all that was known of Britain for many a long year to come.

CHAPTER VIII