The first traveller of note through this distracted Europe was a Frenchman named Arculf, a Christian bishop. When he had visited the Holy Land and Egypt his ship was caught in a violent storm and driven on to the west coast of Scotland. After many adventures Arculf found himself at the famous convent of Iona, made welcome by an Irish monk Adamnan, who was deeply interested in Arculf's account of his wanderings, and wrote them down at his dictation, first on waxed tablets, copied later on to parchment. How tenderly the two monks dwell on all the glories of Jerusalem. "But in that beautiful place where once the Temple had been, the Saracens now frequent a four-sided house of prayer, which they have built, rudely constructing it by raising boards and great beams on some remains of ruins, which house can hold three thousand men at once." And Arculf draws on the waxed tablet the picture of some church or tomb to make his narrative clearer to his friend Adamnan. Perhaps the most interesting part of all the travels is the account of the lofty column that Arculf describes in the midst of Jerusalem. "This column," he says, "as it stands in the centre of the heaven, shining straight down from above, proves that the city of Jerusalem is situated in the middle of the earth." Arculf's journey aroused great interest among the newly converted Christians of the north, and Willibald, a high-born Englishman, started off in 721 to explore farther. But the road through Europe was now full of danger. The followers of Mohammed were strong, and it required true courage to face the perils of the long journey. Willibald was undaunted, and with his father and two brothers he sailed from Southampton, crossed to France, sailed up the Seine to Rouen, and reached Italy. Here the old father died. Willibald and his brothers travelled on through "the vast lands of Italy, through the depths of the valleys, over the steep brows of the mountains, over the levels of the plains, climbing on foot the difficult passes of the Alps, over the icebound and snow-capped summits," till they arrived at Rome. Thence they made their way to Syria, where they were at once thrown into prison by Mohammedan conquerors. They were brought before the ruler of the Mohammedan world, or Khalif, whose seat was at Damascus. He asked whence they came. "These men come from the western shore, where the sun sets: and we know not of any land beyond them, but water only," was the answer. Such was Britain to the Mohammedans. They never got a footing in that country: their Empire lay to the east, and their capital was even now shifting to Bagdad. [Illustration: THE WORLD-MAP OF COSMAS, SIXTH CENTURY. This is the oldest Christian map. It shows the flat world surrounded by the ocean, with the four winds and the four sacred rivers running out of the terrestrial Paradise; beyond all is the "terra ultra oceanum," "the world beyond the ocean, where men dwelt before the flood."]