BOW STREET.—Shortly after the opening of the court yesterday morning, and before any of the night charges had been disposed of, Prince Louis Napoleon and Le Comte Leon, who is said to be the son of Bonaparte, to whom he hears a striking resemblance, were brought before Mr. Jardine, charged by Nicholas Pearce, inspector of the A division, with having met at Wimbledon Common, and attempted to commit a breach of the peace, by fighting a duel with swords and pistols. Lieut.-Col. Jeremiah Ratcliffe, 6th Dragoons, as second to the last defendant, and Col. Charles Parquin, second to the Prince, together with Count D’Orsay, and a servant, named Mertial Kien, with aiding and assisting the principals in the intended combat. Previous to the evidence being taken, two brace of pistols, with powder flasks, and a pair of rapiers, were laid on the table for the inspection of the magistrate. Inspector Pearce, being sworn, said, about 2 o’clock this morning he received information from Superintendent Baker, that certain parties had an intention of meeting in a hostile manner on Wimbledon Common, some of whom were to start from Fenton’s Hotel and the others from Carlton Gardens; in consequence of which I went into St. James’s Street, where I saw a post-chaise drive up to the door of the hotel, about 7 o’clock, but I could not ascertain if any person had got into it. After delaying a short time, it moved slowly on in the direction of Piccadilly, followed by Col. Ratcliffe, and stopped again at Tattersall’s, where another person followed towards Hyde Park Corner. The chaise was then driven westward, and I followed it on horseback; but, previous to arriving at Hyde Park Corner, the defendant Ratcliffe passed, on horseback, in Piccadilly. Mr. Jardine: What hour might it be then?