left side, for it is of greater virtue than on the right side; for the strength of their growing is toward the north, that is the left side of the world; and the left part of man is, when he turns his face toward the east." Sir John was not by any means singular in his views of the nature of diamonds in his day, however much he may be at variance with modern authorities; and he is only repeating a popular superstition of the middle ages when he ascribes many wonderful virtues to this gem, which he says preserves the wearer from poison, and wild beasts, and the assaults of enemies, and the machinations of enchanters, gives courage to the heart and strength to the limbs, heals lunatics, and casts out devils. But it loses its virtue by sin. From stories of eels thirty feet long, and people of an evil color, green and yellow, and the well of Perpetual Youth, from which Sir John avers that he drank, and rats as great as dogs, which they take with huge mastiffs, because the cats feel unable to manage them, we pass to a passage of a very different kind, which, considering the time when it was written, is certainly curious. One hundred and seventy years before the time of Columbus we find Sir John Maundeville arguing that "the land and sea are of round shape, because the part of the firmament appears in one country which is not seen in another country," and predicting that "if a man found passages by ships, he might go by ship all round the world, above and beneath." A rather elaborate essay is devoted to an estimate of the size of the world, and to the story of an Englishman--name unknown--who sailed around it once and never knew it; but coming to a country where the people spoke his own language, was so much amazed that he turned around and sailed all the way back again. After this, Sir John gets back without unnecessary delay to the rosy realms of eastern fable.