Among the colonial governors, who were indebted for their situation to their rank at home, was Don Pedro Arias de Avila, or Pedrarias, as usually called. He was married to a daughter of Dona Beatriz de Bobadilla, the celebrated Marchioness of Moya, best known as the friend of Isabella the Catholic. He was a man of some military experience and considerable energy of character. But, as it proved, he was of a malignant temper; and the base qualities, which might have passed unnoticed in the obscurity of private life, were made conspicuous, and perhaps created in some measure, by sudden elevation to power; as the sunshine, which operates kindly on a generous soil, and stimulates it to production, calls forth from the unwholesome marsh only foul and pestilent vapors. This man was placed over the territory of Castilla del Oro, the ground selected by Nunez de Balboa for the theatre of his discoveries. Success drew on this latter the jealousy of his superior, for it was crime enough in the eyes of Pedrarias to deserve too well. The tragical history of this cavalier belongs to a period somewhat earlier than that with which we are to be occupied. It has been traced by abler hands than mine, and, though brief, forms one of the most brilliant passages in the annals of the American conquerors. *4 [Footnote 4: The memorable adventures of Vasco Nunez de Balboa have been recorded by Quintana, (Espanoles Celebres, tom II.) and by Irving in his Companions of Columbus. - It is rare that the life of an individual has formed the subject of two such elegant memorials, produced at nearly the same time, and in different languages, without any communication between the authors.] But though Pedrarias was willing to cut short the glorious career of his rival, he was not insensible to the important consequences of his discoveries. He saw at once the unsuitableness of Darien for prosecuting expeditions on the Pacific, and, conformably to the original suggestion of Balboa, in 1519, he caused his rising capital to be transferred from the shores of the Atlantic to the ancient site of Panama, some distance east of the present city of that name. *5 This most unhealthy spot, the cemetery of many an unfortunate colonist, was favorably situated for the great object of maritime enterprise; and the port, from its central position, afforded the best point of departure for expeditions, whether to the north or south, along the wide range of undiscovered coast that lined the Southern Ocean. Yet in this new and more favorable position, several years were suffered to elapse before the course of discovery took the direction of Peru. This was turned exclusively towards the north, or rather west, in obedience to the orders of government, which had ever at heart the detection of a strait that, as was supposed, must intersect some part or other of the long-extended Isthmus. Armament after armament was fitted out with this chimerical object; and