who has had the honor to exhibit, with universal applause, the most surprising performances that were ever attempted by mankind, before His Royal Highness William, late Duke of Cumberland, at Windsor Lodge, May 7th, 1752; before His Royal Highness the Duke of Gloucester, at Gloucester House, January 30th, 1769; before His Royal Highness the present Duke of Cumberland, at Windsor Lodge, September 25th, 1769; before Sir Hans Sloane and several of the Royal Society, March 4th, 1751, who made Mr. Powell a compliment of a purse of gold, and a fine large silver medal, which the curious may view by applying to him; and before most of the Nobility and Quality in the Kingdom. He intends to sup on the following articles: 1. He eats red-hot coals out of the fire as natural as bread. 2. He licks with his naked tongue red-hot tobacco pipes, flaming with brimstone. 3. He takes a large bunch of deal matches, lights them altogether; and holds them in his mouth till the flame is extinguished. 4. He takes a red-hot heater out of the fire, licks it with his naked tongue several times, and carries it around the room between his teeth. 5. He fills his mouth with red-hot charcoal, and broils a slice of beef or mutton upon his tongue, and any person may blow the fire with a pair of bellows at the same time. 6. He takes a quantity of resin, pitch, bees'-wax, sealing-wax, brimstone, alum, and lead, melts them all together over a chafing-dish of coals, and eats the same combustibles with a spoon, as if it were a porringer of broth (which he calls his dish of soup), to the great and agreeable surprise of the spectators; with various other extraordinary performances never attempted by any other person of this age, and there is scarce a possibility ever will; so that those who neglect this opportunity of seeing the wonders performed by this artist, will lose the sight of the most amazing exhibition ever done by man. The doors to be opened by six and he sups precisely at seven o'clock, without any notice given by sound of trumpet. If gentry do not choose to come at seven o'clock, no performance. Prices of admission to ladies and gentlemen, one shilling. Back Seats for Children and Servants, six pence. Ladies and children may have a private performance any hour of the day, by giving previous notice. N. B.--He displaces teeth or stumps so easily as to scarce be felt. He sells a chemical liquid which discharges inflammation, scalds, and burns, in a short time, and is necessary to be kept in all families. His stay in this place will be but short, not exceeding above two or three nights. Good fire to keep the gentry warm.