A town which is built of red bricks, that are faced with white marble, the whole garnished with green blinds, can never have but one outward sign—that of tawdry vulgarity. But this radical defect is slowly disappearing from the streets of Manhattan; and those who build, are getting to understand that architecture, like statuary, will not admit of strong contrasts in colours. Horace Walpole tells us of a certain old Lord Pembroke, who blackened the eyes of the gods and goddesses in the celebrated gallery at Wilton, and prided himself on the achievement, as if he had been another Phidias. There have been thousands of those who have laboured in the spirit of this Earl of Pembroke in the streets of all the American towns; but travelling, hints, books and example, are slowly effecting a change; and whole squares may now be seen in which the eye rests with satisfaction on blinds, facings and bricks, all brought to the same pleasing, sober, architectural tint. We regard this as the first step, in advance, that has been made in the right direction, so far as the outward aspect of the town is concerned, and look forward, with hope, to the day when Manhattan shall have banished its rag-fair finery altogether, and the place will become as remarkable for the chaste simplicity of its streets, as they have hitherto been for their marked want of taste. With this great town, mottled as it is, in people as well as in hues, with its native population collected from all parts of this vast republic, and its European representatives amounting to scores of thousands, we shall have much to do in the succeeding pages. Our researches, however, will be bestowed more on things moral than on things physical; and we shall endeavour to carry the reader with us through scenes that, we regret to say, are far more characteristic than novel. In one of the cross streets that communicate with Broadway, and below Canal, stands a dwelling that is obnoxious to all the charges of bad taste to which there has already been allusion, as well as to certain others that have not yet been named, at all. A quarter of a century since, or within the first twenty years of its own existence, the house in question would have been regarded as decidedly patrician, though it is now lost amid the thousands of similar abodes that have arisen since its own construction. There it stands, with its red bricks periodically painted redder; its marble facings, making a livery of red turned up with white; its green blinds, its high stoop, its half-buried and low basement, and all its neatness and comfort, notwithstanding its flagrant architectural sins. Into this building we now propose to enter, at the very early hour of eight in the morning.