Yet, I suppose there must be something in the superstition that one part of London is more bracing or more relaxing than another, and that there is really, however insensibly, a difference of levels. That difference of temperaments which I have mentioned, seems mostly intimated in the size and age of the houses. They are larger and older in Bloomsbury, where they express a citizen substance and comfort; they are statelier about the parks and squares of Belgravia, which is comparatively a new settlement; but there are more little houses among the grandeurs of Mayfair which is of the same social quality, though many of its streets crossing from Piccadilly have quite gone to shops and family hotels and lodgings. It is more irregular and ancient than Belgravia, and its grandeurs have a more casual air. The historic mansions crowded by the clubs towards Hyde Park Corner, and grouped about the open space into which Piccadilly falters there, or following the park in the flat curve of Park Lane, have not the effect of withdrawal and exclusion of the Belgravian mansions; beyond which again there is a world of small dwellings of fainter and fainter self-assertion till they fade into the hopeless plebeian unconsciousness of Pimlico, whose endless streets are without beauty or dignity. Yet beyond this lost realm Chelsea redeems itself in a grace of domestic architecture and an atmosphere of esthetic associations which make it a favorite abode of the tastes as well as the means. Kensington, where you arrive after what seems hopeless straggling through the roaring thoroughfare prolonging the Fleet-and-Strand-derived Piccadilly, is of almost equal artistic and literary appeal, but is older and perhaps less actual in its claims upon the cultivated sympathies. In either of these regions the polite American of definite resources might, if banished from the republic, dwell in great material and spiritual comfort; but if he chose Chelsea for his exile, I do not know that I should blame his preference. There he would have the neighborhood of many charming people whom to know for neighbors would add a certain grace to existence, although he might not otherwise know them. Besides he would have, beyond the Thames, the wooded stretch of Battersea Park, if his dwelling, as it very well might, looked out upon the river and across it; and in the distance he would have the roofs and chimneys of that far Southwark, which no one seems anxious to have nearer than, say, the seventeenth century, and yet which being a part of London must be full of perfectly delightful people. [Illustration: THAMES EMBANKMENT.]