Y. • His Royal Highness the Prince Re ent Stiti;i; Ms jQth pear' - 4 on Monday ;- but Ott 41,ate..0f 'his. M • jesty; no - public eelebratiox took.place. The Prince Regent and all the Royal Dukes, who, in the course of Sunday and Monday arrived at Windsor, joined her M ajesty and . the Princesses at Piogmore,.where the day was celebrated enjavnifie, the state of , his Majesty rendered it indecorous to invite any visitors.—in the maropoliii, the morning was tuihered in by the ringing of bells, an 4 in the course of the day must of the distinguished per sons now in town left their cards at Carlton Nouse; fn the evening, the theatres,' the subscription houses, and those of his Highness's tradesmen were brilliantly illuminated. MR. SADLEIes ASCEI,IT4N HIS • • . This Intrepid British Rronaut made his I?th eAcursicr into the regions of air on Monday, from the gardens of the Mermaid vern, Hackney. He was accompaniedby Lieut. Viget , of the navy. '[he road to the Mermaid, at a very . early hour, was lined with carriages and horsemen of all descriptions: so extremely thronged were aU the roads from town, and from the eastward part of the country, that the pagsage *as completely bl d OciNd up:for a con e erable time. The balloon bad been previOn;lrtirouilit . fVorrt - the Pantheon to the gardens,' whither the baireis cantaining tit - 4 inflammable gas necessary W be used ike7filling it - were placed.,; When the balloon was sufficiently infiatrat the'atipearanq atena such as' to cab forth the most decided approbation from t least SICOO spectators within the gardens. Theqaalloon h precisely - the same, only fresh varnished, as when Mr. Sadler ascended at Cambridge ; but the car is splendid in the extreme. It is an en tire new one, and decorated in an appropriate _manner [(vibe day—the anniversary of the Prince „Regent's 'birth ; It is, tilled with beautiful yellow silk . ' of the ricliek textity,-atid frtted with - exquisite elegant cushions of the satne,coltaat. The tovere-" ing is cotton, of azure .blue, stacidestoxer with.stars of most. brilliant appearance ; a wreath of - of acanthus leaves intirry4ei,the bottom of the car,'whith is adorned with crimson Telvee, and else outside displays a rail of Chinese - fretwoilk, cktildlii4tfe most' curious manner, gilt, and covered Witla telmsbn 'velvet, and en riched With gold bordering. At each'enl :Of the ear q'E dfstSlayed the Prince gegent's plumes, finely worked in golsl. c7oth, and adorned'With a vatic lr bf oak leaves; at acorns, &c. T he - catappy, which is formed over the car, is of a coal Cal form, CoMpose4 of rich crimson silk, the top of which is surmounted by a rich co ronet, and costly plumes of drop d'or ; the Base Pea - neer by - a cornice, to which the balloon is attached by about thirty golden: cords ; added to these cords, '6IY 'additional titles of the same beauty arc suspended front the cornice' to thetar ; over these bung festoons of satin, with gilt acorn trimmings, looped up with gold twist.' On the top are six othet phi - tries of feathers, forming six, sectiops,.each of which is enliyenetl by sprigs of laurels and gold 'berries, presenting one of the mast superb ob jects which the ingenuity of man can devise, or which the fancy of the spectator can hope to see realized ! , -The car having been affixed to the balloon about half-past two o'clock, the traveller! (Messrs. Sadler and Lieut. Paget;) accompanied by several of his friends, passed through the crowd of spectators to the stage, accompanied also by the standard or flag-bearers.. The necessary ballast having been stowed in the ear, and the whole being ready for ascending, the two aerial travellers prepared to take theft seats. Mr. Sachet stepped itarrst, and the Lieutenant immedi ately followed ; the cords, which till this time had been held by about thirty. men, to prevent the kalloOn from ascending, werti let go, and the men hung upon the car, in order that the balloon might be removed from the spot where it was filled, to some little distance, that in ascending-it might clear the trees, and at the same time afford the spectators a fuller vkve of the ascent. Exactly at eighteen minutes before three "o'clock, the signal be ing. made, they kt go their hold, and -the balloon gradUally arose (clearing the trees) in a slow and trulyatrajestie raanner. It kept slowly ascending, taking a South-east direction for nearly tvyenty truriutea ; during the whole of this time the travelers were dis tinctly seen by the nakedeye, Mr. Sadler wasting his flag, and the Lieutenant waving his hat, to the great satisfaction of the spectators. 'lle balloon then ascended higher, still keeping in sight for upwards of ten minutes, until it became no larger in appearanee than a bird, and at length was lost to the view. Tht teneral expression of the spectators, wheti the travellers were beyond their sight, was-an expression of humanity and feeling fur their safe return. It is impossible to describe the scene which was presented all the way to town on the return of the spectatorg. Upon a moderate calculation, the roads contained nearty 100,000 persons. In the vicinity of le Mermaid, much confusion was created from the impossibility of foot passengers making their wq ; several persons were thrown down and much hurt. The following are the particulars of the voyage given by Mr. Sadler s—At three o'clock, the balloon still _continuing to as cend, the 'aerial travellers observed beneath them what appeared to be two lair detente of water, but which subsequent Other vation proved to them were the East India Docks. The they now stood.at 521. The balloon being quite distended' it Wattle nteeselity to let MO *erne of th..eatt p and this Wai doireatiajntea4llllo. - tin the. billoottileakeitifier`Tbitaidatail of tine balloon,n4nat hecinne very rapid, and . ifsetralfelleta *ere soon at an Immense height. Ai ten minutes past three they crossed the Thames at Galeons Reach, and the Bound of a piece 6f ordnatite . from Woolwich was distinct!), heard tey Mt . :Sadler and his tent panion., Mr. Sadler upon his wavedbis flag, and another piece of ordnance was discharged, as itto return the c.ompliMent sps . they pasted. T 1 City of LoriZon, the four bridges, the Thames, and the German ocean; were then tlistinguiattabte td the aeronauts, and at this periociMr.•Paget drew the cork• of. a bottle . of Madeira, and the .health of the Prince Regtut lit - NA In is bumper.. The. prospect, which at. this period, tor the first time, presented itself to the pt Mr. ?art a Was beyond the power of description; . the capital wit at that time ipronounced by him to be a small village,nor could h6.lae• per &laded to the contrary, till the four bridria• namely, Landoll, Weitminster, Blackfriais .and Battersea, from their intercept - ing the river, rendered iintire Conspii:unug than other objects, reit pointedotat tb Mt:Sadler. As the aeronauts cola atnueci theircourseadown the river, they were saluted by •tb# discliarge of: several more , pieces of artillery, and at half past. athrea'they - draiiitiheliealth of all their Merida at Hackney, and ;thee:rower' Halulats Militia. • At half past three, Mr. Sadter .:perceiakirag that the-balloon was approaching tcf , the sea, hit it . prudent to look cnit for a spot on which to effect a landing ; and an order to cause the balloon to descend, a quantity of gas was 'let out of the,balluora by opening the valve. The balloon then 'descended' till the ships in the river, from Woolwich to the 'om a became perfectly distinguisitable.. At ten-minute.' before four r Tilbstry Sort came in sight, and they•hada perfect vie* of the town of Gravesend. Mr. Sadler now oteierved, that the `country round the fart was perfectly flat; and remarked to kis -fellow voyager, that it Would be defirable to land on that side the river; and measures were taken to accost pliA that object. On their neareraapproach to the earth, they saw several reapers ,at work in a wheat field, and hailed them for assistance • an im mediate chase commenced over hedges and across ditches; the balloon, however, for some tittle took the lead; 'this time a ' bri-k gale was blowing, which rendered the descent a xtretnily is difficult; the grappling irons were, however, thrown it and dragged along the ground ; in their course, they caught the clothes of a labourer, and he became so completely entangled. • that he could not extricate himself, till his shirt was literally torn from his back. A number of persons were lay thictigne ,coliected together in all direction!. During this time the oar frequently to.ictied the ground, and.rebounded up again hat • :veral yards; and, by one of these-shochs, Mr. Paget was thrown out of the car, but had sufficient presence of mind to catch held of the rim of the car at the same instant, by which he persevearit in holding till assistance arrived, and every thing vvas seeoreci t and his companion, Mr. Sadler , released from-bia perogua.sitva tion, and safely landed on Awn :firma. At this time it wanted five minutes to four o'clock, and the travellers were. within faXi yards-of Tilbury fort, and 150 yards from the rivet', the voyage. having occupied a space of one hour and eighteen Minutes:' l'he balloon was soon secured, and, being placed in a boat, she afro news passed over the river to Gravesend, where they dined, and immediately after proceeded in a post-chaise and four to town, followed by a crowd of spectators, which, attracted by a view of the balloon and car, secured on the tqp of the chaise, in creased to such a degree, that, long before their arrival in town, the chaise could only proceed at a walking pace. In this 'man ner they proceeded. to Hackney, at which place they arrived at ten minutes past nine o'clock; in perfect health and spitits. A number of persons sutfcrad serious losses by the operations of the pickpockets, who, to the disgrace of the Pollee, swarmed in every direction. • _ T His Grace the Duke of NORTHUidannLAND has recently paid a tribute' affectton to the royal . person of the Ptitt , itt Itsolgt, "and admiration of his ruling conduct, which .must secure a lasting claim to national gratitude.—On the 12th of August last, his Grace endowed and opened ( at Alnwick, a Seminary for Two Hundred Boys, the children of the neighbouring Poor, to. be clothed, fed,. and educated at his Grace's sole expense and bounty, enacting, as an express clause in this per manent Institution, that the Natal-day of the . REGENT should be observed for ever as a holiday, itt order that the boys, as they grow up, may learsi .. reverence and' bless - the PniscE. THE Ni PRINCE REGENT", BIRTH-DA