_The Times_, 20 Dec.—Yesterday, the lad found in Buckingham Palace, who had given his name as Edward Cotton, and described himself as the son of a respectable tradesman living in the town of Hertford, was brought before Messrs. White and Gregorie for final examination. It will be recollected that he had purloined, amongst other articles, two letters, which were immediately sealed up, and sent back to the Palace. The prisoner turns out to be the son of an industrious tailor, named Jones, residing in York Street, Westminster; and, it appears, had frequently expressed his intention to enter the Palace, under any circumstances. He had often stated that he wished to see the grand staircase, in order to take a sketch of it, and had often expressed his determination to see the Queen, and to hear her sentiments when Her Majesty and her Ministers were assembled in Council. Frederick Blume now deposed that he was valet to the Hon. Mr. Murray, and that a sword, a quantity of linen and other articles, had been stolen from that gentleman’s apartments in the Palace. Mr. White: When were they stolen? Witness: I can’t recollect. Mr. White: Was it a week, a month, or three or four months ago? Witness: I cannot say. Mr. White: Where was your master’s sword at the time you saw it last? Witness: When I went to Windsor. Mr. White: When was that? Witness: I cannot exactly recollect, and then he added, that about a week since, he had sent from Windsor to the Palace, a portmanteau containing his linen, and three pairs of trousers, four of stockings, and three cravats were missing. The padlock of the portmanteau had been forced by the sword having been applied to it. The sword had broken in the attempt. He had also lost five 10 sous pieces, which had been found upon the prisoner. Mr. White: What is the value of the articles you have lost? Witness: I don’t know; but I should like to give three guineas to get them back. Mr. White: Can you swear to the French coin found upon the prisoner as being yours? The witness was then shown the coin, and he said that he certainly could. They had been taken from his bedroom. * * * * * Mr. White: Can any information be given as to the manner in which the prisoner gained access to the Palace? Cox, one of the porters to the Palace, said that the principal entrance door was always locked, and the key in his possession. At 5 o’clock on Saturday morning, just as he was about to get out of bed, the prisoner opened the door of his room, as witness considered, to obtain the key; his face and hands were disguised with soot and bear’s grease, and he was asked whether he came to sweep a chimney: he did not make any answer, but endeavoured to escape.