PLANTATION BITTKBS. t The American ttirl of the renocL the " Upper Ten Thousand" be kind enough to admit us for a moment within their charmed circle, in order that we may make a pen-and-ink sketch of the " American Girl of the Period," as she flourishes there. Let us call at the family mansion in Madison Square, whence she is about to migrate for the Springs. Like other " birds of beauty," she arranges her plumes before taking wing. The press is privilc ged. We are ushered into her dressing-room, where, with her confidential maid, she is engaged in the arduous yet pleasant duty of -packing up." It is arduous for there are seven Saratoga trunks, the largest only a few sizes smal:er than an ordinary log cabin, to be filled with the appurtenances of wealth and fashion, lying loose around. Miss Aurifera Greenbacks, your most obedient, will you allow us to take a brief survey of your paraphernalia ?