The prince passed five years in prison, reading much, and doubtless meditating much on the mistakes of his career. Many plans of escape had been secretly proposed to him, but he rejected all of them, fearing they were parts of a trap laid for him by the authorities. It has always been believed, however, and it is probably true, that Louis Philippe would have been very willing to have the jailers shut their eyes while Louis Napoleon walked out of their custody, believing that the ridicule that had attended his two attempts at revolution had ruined his chances as a pretender to the throne. During the years Louis Napoleon was imprisoned at Ham, he received constant marks of sympathy, especially from foreigners. He was known to favor the project of an interoceanic canal by the Nicaragua route between the Atlantic and Pacific Oceans, and the Government of Nicaragua proposed to him to become president of a company that would favor its views, expressing the hope that he would make himself as great in America by undertaking such a work, as his uncle has made himself by his military glory. The illness of his father in Florence gave Prince Louis Napoleon a good reason for asking enlargement on parole from the French Government. Louis Philippe was willing to grant this; but his ministers demurred, unless Louis Napoleon would ask pardon _loyalement_. This Louis Napoleon refused to do; and having by this time managed to extract a loan of £6,000 from the rich and eccentric Duke of Brunswick, he resolved to attempt an escape. Here is the story as he told it himself when he reached England. The governor of Ham, it must be premised, was a man wholly uncorruptible. He was kind to his prisoner, with whom he played whist every evening, but he was bent on fulfilling his duty. This duty obliged him to See the prince twice a day, and at night to turn the key upon him, which he put into his pocket. The fortress of Ham forms a square, with a round tower at each of the angles. There is only one gate. Between the towers are ramparts, on one of which the prince daily walked, and in one corner had made a flower-garden. A canal ran outside the ramparts on two sides; barracks were under the others. Thélin, the prince's valet, was suffered to go in and out of the fortress at his pleasure. On the 23d of May, 1845, Thélin went to St. Quentin, the nearest large town, and hired a cabriolet, which was to meet him the next day at an appointed place upon the high-road. The prince's plan depended on there being workmen in the prison, and he had been about to make a request to have his rooms papered and painted, when the governor informed him that the staircase was to be repaired. The day before the one chosen for the attempt, two English gentlemen, probably by a previous understanding, had visited the prisoner, and he asked one of them to lend his passport to the valet Thélin.