'_Aug. 12._--At the Pavilion dinner yesterday, the Prince entertained five of his Royal brothers, the Dukes of York, Clarence, Kent, Sussex, and Cumberland. Of the splendid party were also the Duke of Orleans, M. Beaujolais, the Marquis of Winchester, Count Stahremberg, Mr. Sheridan, Colonels Turner and Lee, etc. This being the natal day of the Heir apparent, the morning was ushered in by the ringing of bells, and the flag was hoisted on the tower of the church. Two oxen, _pro bono publico_, are roasting whole, on the Level. Such an agreeable bustle as this town at present exhibits, was never witnessed here before. Business is totally given up, and pleasure is the standing order of the day. At ten o'clock a.m., the _Otter_ sloop of war, decorated with the colours of all nations, hoisted the Royal Standard at the main, and announced the event by a discharge of her guns. The _Gallant_ and _Calypso_, armed brigs, and Earl Craven's yacht, were, also, dressed out with colours. About this time, the Carabineers from Shoreham, and the Fourth Dragoons, passed to the north and south of the town for the Downs. The Artillery, the King's Dragoons, and the Nottingham and South Gloucestershire Militias were under arms as early as four o'clock in the morning. At half past twelve, the Prince of Wales, habited as a Field Marshal, a star at his breast, accompanied by his Royal brothers, and a numerous suite of noblemen, etc., and mounted on a grey charger, splendidly caparisoned, left the Pavilion for the Downs. The Royal brothers were all in regimentals, with stars at their breasts. The Duke of Sussex wore his Highland uniform. The Earl of Moira, General White, Count Beaujolais, Lord E. Somerset, the Earl of Barrymore, etc., were in the Prince's suite. Lady Haggerstone, and Miss Seymour, the Lord Chancellor, Lord Headfort, Mr. Sheridan, and Mrs. Smith were in the Prince's landau. Mrs. Fitzherbert was detained at home by indisposition.