"Miss Monckton, daughter to Lord Gallway, appeared in the character of an Indian Sultana, in a robe of cloth of gold, and a rich veil. The seams of her habit were embroidered with precious stones, and she had a magnificent cluster of diamonds on her head; the jewels she wore were valued at 30,000_l._ The Duke of Devonshire was very fine, but in no particular character. Captain Nugent of the Guards, in the character of Mungo, greatly diverted the company. "The Countess Dowager of Waldegrave wore a dress richly trimmed with beads and pearls, in the character of Jane Shore. Her Grace of Ancaster claimed the attention of all the company in the dress of Mandane. The Countess of Pomfret, in the character of a Greek Sultana, and the two Miss Fredericks, who accompanied her as Greek Slaves, made a complete groupe. The Dutchess of Bolton, in the character of Diana, was captivating. Lord Edg--b, in the character of an Old Woman, was full as lovely as his lady, in that of a Nun. "Lady Stanhope, as Melpomene, was a striking fine figure. Lady Augusta Stuart, as a Vestal, and Lady Caroline, as a Fille de Patmos, shewed that true elegance may be expressed without gold and diamonds. The Chimney Sweeper, Quack Doctor, and a Friar, acquitted themselves with much entertainment to the company. "About two o'clock the company began to depart, in effecting which there was great difficulty. "We hear that two Great Personages were complimented with two tickets for Monday night's masquerade, which they very politely returned. "Most of the carriages that came to the masquerade were chalked by the populace with 'Wilkes and Liberty.'" It will no doubt be remembered by many, that a very good representation of an eruption of Mount Ætna, on a large scale, with Cyclops at work in the centre of the mountain, was exhibited a few years since in the garden at Ranelagh. That it may not be supposed that this scene was a new thought, I shall describe the entertainment of an evening at Mary-le-bon gardens when they were in full reputation. The usual concerts and songs were performed; but Signior Torré had been employed to prepare a representation of Mount Ætna as an addition to the common fire-works, consisting of vertical wheels, suns, stars, globes, &c. in honour of the King's birth-day, June 4, 1772, who was, with the Queen, represented in transparencies surrounded by stars. When the fire-works were concluded, a curtain which covered the base of the mountain rose, and discovered Vulcan leading the Cyclops to work at their forge; the fire blazed, and Venus entered with Cupid at her side, who begged them to make for her son those arrows which are said to be the causes of love in the human breast: they assented, and the mountain immediately appeared in eruption with lava rushing down the precipices. A few trees stand as mementoes of Mary-le-bon gardens near the North end of Harley-street.