Be this as it may, _we_, who are so _un_fashionable as to be occasional promenaders in the parks, rejoice to present our readers with the annexed plan of the improvements now in progress in St. James's Park, and in conjunction with the palace works they denote the simultaneous study of the happiness of the sovereign and the subject. Our country readers, surrounded by all the blooming attributes of health, will doubtless congratulate such important improvements of what has been termed "the lungs of the metropolis." The annexed plan is reduced from the engraving which accompanied the Treasury Minute, January 19, 1827; from which the following are extracts:-- "The Earl of Liverpool and the Chancellor of the Exchequer lay before the Board a plan for building on the North and South sides of St. James's Park, (in addition to the buildings already sanctioned upon the site of Carlton Gardens;) and also for making some considerable alterations in the distribution of the intermediate ground, whereby the appearance of the park would be much improved, while a very material accommodation would be afforded to the public. "They state, that they have received the King's commands to convey to the Board his Majesty's most gracious approbation of this proposal, and his pleasure that the necessary steps should be taken, with as little delay as possible, for carrying the measure into execution, so far as it respects the South side of the park, and the alteration of the ground comprised in it. "My Lords perceive, that by this plan the whole of the space in St. James's Park, now laid out in grass, and from which the public are excluded, will be thrown open (with the exception of the parts to be planted) for the use of persons on foot." The magnificent range of buildings intended to occupy the site of Carlton-house and gardens, and to extend from Spring Garden, Charing Cross on the _east_, to the Ordnance office, in Pall Mall, on the _west_, is already commenced in the last mentioned quarter. The substructure is a terrace, (containing the domestic offices,) of about 53 feet wide--its architecture of the Paestum Doric order surmounted by a balustrade. The order of the superstructure is Corinthian. In the centre of the range will be a fountain formed of the eight columns of the portico of Carlton-house, with eight additional columns on the same model. The basement story of all the houses is to be supplied with water by the overflow of this fountain and jets. * * * * *