Ten thousand vehicles careering through the Park this perfect afternoon. Such a show! and I have seen all--watch'd it narrowly, and at my leisure. Private barouches, cabs and coupés, some fine horseflesh--lapdogs, footmen, fashions, foreigners, cockades on hats, crests on panels--the full oceanic tide of New York's wealth and "gentility." It was an impressive, rich, interminable circus on a grand scale, full of action and color in the beauty of the day, under the clear sun and moderate breeze. Family groups, couples, single drivers--of course dresses generally elegant--much "style," (yet perhaps little or nothing, even in that direction, that fully justified itself.) Through the windows of two or three of the richest carriages I saw faces almost corpse-like, so ashy and listless. Indeed the whole affair exhibited less of sterling America, either in spirit or countenance, than I had counted on from such a select mass-spectacle. I suppose, as a proof of limitless wealth, leisure, and the aforesaid "gentility," it was tremendous. Yet what I saw those hours (I took two other occasions, two other afternoons to watch the same scene,) confirms a thought that haunts me every additional glimpse I get of our top-loftical general or rather exceptional phases of wealth and fashion in this country--namely, that they are ill at ease, much too conscious, cased in too many cerements, and far from happy--that there is nothing in them which we who are poor and plain need at all envy, and that instead of the perennial smell of the grass and woods and shores, their typical redolence is of soaps and essences, very rare may be, but suggesting the barber shop--something that turns stale and musty in a few hours anyhow. Perhaps the show on the horseback road was prettiest. Many groups (threes a favorite number,) some couples, some singly--many ladies--frequently horses or parties dashing along on a full run--fine riding the rule--a few really first-class animals. As the afternoon waned, the wheel'd carriages grew less, but the saddle-riders seemed to increase. They linger'd long--and I saw some charming forms and faces. DEPARTING OF THE BIG STEAMERS