At the outset of the twentieth century O. Henry, in a mood of reaction from current snobbism, discovered what he called the Four Million; and during the same years, in a mood not wholly different, Edith Wharton rediscovered what she would never have called the Four Hundred. Or rather she made known to the considerable public which peeps at fashionable New York through the obliging windows of fiction that that world was not so simple in its magnificence as the inquisitive, but uninstructed, had been led to believe. Behind the splendors reputed to characterize the great, she testified on almost every page of her books, lay certain arcana which if much duller were also much more desirable. Those splendors were merely as noisy brass to the finer metal of the authentic inner circles. These were very small, and they suggested an American aristocracy rather less than they suggested the aborigines of their native continent. Ralph Marvell in _The Custom of the Country_ described Washington Square as the "Reservation," and prophesied that "before long its inhabitants would be exhibited at ethnological shows, pathetically engaged in the exercise of their primitive industries." Mrs. Wharton has exhibited them in the exercise of industries not precisely primitive, and yet aboriginal enough, very largely concerned in turning shapely shoulders to the hosts of Americans anxious and determined to invade their ancient reservations. As the success of the women in keeping new aspirants out of drawing-room and country house has always been greater than the success of the men in keeping them out of Wall Street, the aboriginal aristocracy in Mrs. Wharton's novels transacts its affairs for the most part in drawing-rooms and country houses. There, however, to judge by _The House of Mirth_, _The Custom of the Country_, and _The Age of Innocence_, the life of the inhabitants, far from being a continuous revel as represented by the popular novelists, is marked by nothing so much as an uncompromising decorum.