listened to the plans of an adventurer who had both eloquence and ability to recommend him. He provided Borri with the means to make experiments, and took a great interest in the progress of his operations. He expected every month to possess riches that would buy Peru; and, when he was disappointed, accepted patiently the excuses of Borri, who, upon every failure, was always ready with some plausible explanation. He became in time much attached to him; and defended him from the jealous attacks of his courtiers, and the indignation of those who were grieved to see their monarch the easy dupe of a charlatan. Borri endeavoured, by every means in his power, to find aliment for this good opinion. His knowledge of medicine was useful to him in this respect, and often stood between him and disgrace. He lived six years in this manner at the court of Frederick; but that monarch dying in 1670 he was left without a protector.
As he had made more enemies than friends in Copenhagen, and had nothing to hope from the succeeding sovereign, he sought an asylum in another country. He went first to Saxony; but met so little encouragement, and encountered so much danger from the emissaries of the Inquisition, that he did not remain there many months. Anticipating nothing but persecution in every country that acknowledged the spiritual authority of the pope, he appears to have taken the resolution to dwell in Turkey, and turn Mussulman. On his arrival at the Hungarian frontier, on his way to Constantinople, he was arrested on suspicion of being concerned in the conspiracy of the Counts Nadasdi and Frangipani, which had just been discovered. In vain he protested his innocence, and divulged his real name and profession. He was detained in prison, and a letter despatched to the Emperor Leopold, to know what should be done with him. The star of his fortunes was on the decline.