The Emperor Charles V., it will be remembered, had attempted in vain to obtain the reversion of the imperial crown for his son Philip at his own death. The crown of Spain was his hereditary possession, and that he could transmit to his son. But the crown of the empire was elective. Charles V. was so anxious to secure the imperial dignity for his son, that he retained the crown of the empire for some months after abdicating that of Spain, still hoping to influence the electors in their choice. But there were so many obstacles in the way of the recognition of the young Philip as emperor, that Charles, anxious to retain the dignity in the family, reluctantly yielded to the intrigues of his brother Ferdinand, who had now become so powerful that he could perhaps triumph over any little irregularity in the succession and silence murmurs. Consequently, Charles, nine months after the abdication of the thrones of the Low Countries and of Spain, tried the experiment of abdicating the _elective_ crown of the empire in favor of Ferdinand. It was in many respects such an act as if the President of the United States should abdicate in favor of some one of his own choice. The emperor had, however, a semblance of right to place the scepter in the hands of whom he would during his lifetime. But, upon the death of the emperor, would his appointee still hold his power, or would the crown at that moment be considered as falling from his brow? It was the 7th of August, 1556, when the emperor abdicated the throne of the empire in behalf of his brother Ferdinand. It was a new event in history, without a precedent, and the matter was long and earnestly discussed throughout the German States. Notwithstanding all Ferdinand's energy, sagacity and despotic power, two years elapsed before he could secure the acknowledgment of his title, by the German States, and obtain a proclamation of his imperial state. The pope had thus far had such an amazing control over the conscience, or rather the superstition of Europe, that the choice of the electors was ever subject to the ratification of the holy father. It was necessary for the emperor elect to journey to Rome, and be personally crowned by the hands of the pope, before he could be considered in legal possession of the imperial title and of a right to the occupancy of the throne. Julius II., under peculiar circumstances, allowed Maximilian to assume the title of _emperor elect_ while he postponed his visit to Rome for coronation; but the want of the papal sanction, by the imposition of the crown upon his brow by those _sacred hands_, thwarted Maximilian in some of his most fondly-cherished measures.