These pilgrims tramped to and fro clad in simple tunics over a monkish dress of undyed wool, bound round the waist by a strong cord, all their worldly goods on their backs and a staff in their hands. The hermit instinct was growing, and men were sailing away to lonely islands where God might be better served apart from the haunts of men. Perhaps it was this instinct that inspired St. Brandon to sail away across the trackless ocean in search of the Island of Saints reported in the western seas. His voyage suggests the old expedition of Ulysses. A good deal of it is mythical, some is added at a later date, but it is interesting as being an attempt to cross the wide Atlantic Ocean across which no man had yet sailed. For seven years St. Brandon sailed on the unknown sea, discovering unknown islands, until he reached the Island of Saints--the goal of his desires. And the fact remains that for ten centuries after this an island, known as Brandon's Isle, was marked on maps somewhere to the west of Ireland, though to the end it remained as mysterious as the island of Thule. Here is the old story. Brandon, abbot of a large Irish monastery containing one thousand monks, sailed off in an "osier boat covered with tanned hides and carefully greased," provisioned for seven years. After forty days at sea they reached an island with steep sides, where they took in fresh supplies. Thence the winds carried the ship to another island, where they found sheep--"every sheep was as great as an ox." "This is the island of sheep, and here it is ever summer," they were informed by an old islander. This may have been Madeira. They found other islands in the neighbourhood, one of which was full of singing-birds, and the passing years found them still tossing to and fro on the unknown sea, until at last the end came. "And St. Brandon sailed forty days south in full great tempest," and another forty days brought the ship right into a bank of fog. But when the fog lifted "they saw the fairest country eastward that any man might see, it was so clear and bright that it was a heavenly sight to behold; and all the trees were charged with ripe fruit." And they walked about the island for forty days and could not find the end. And there was no night there, and the climate was neither hot nor cold. "Be ye joyful now," said a voice, "for this is the land ye have sought, and our Lord wills that you laden your ship with the fruit of this land and hie you hence, for ye may no longer abide here, but thou shalt sail again into thine own country." [Illustration: THE MYSTERIOUS ISLE OF ST. BRANDON IN MARTIN BEHAIM'S MAP, 1492. As geographical knowledge increased, map-makers were compelled to put Brandon's Isle farther and farther away from Ireland, until here we find it off the coast of Africa and near the Equator.]