A WASHINGTON SCANDAL.--Mention has been made in our Washington dispatches of a rumor prevalent at the capital that a scandalous intimacy has been recently maintained between several well-known senators and representatives in Congress and certain female department clerks. A correspondent of the Philadelphia Evening Telegraph makes some shocking developments in regard to the matter. According to his statement a Southern senator formed a liaison, about a year ago, with a beautiful girl, whose mother countenanced and encouraged the intimacy. He furnished her house luxuriously, and inaugurated a series of wine suppers, to which a gay company of young girls were invited, together with a few of his friends and associates from the Capitol. The house, it is stated, is located on I street, and the quiet neighbors were greatly shocked by the midnight revelry of its occupants. The senator had procured a position for the young lady in the Treasury Department, but this she was compelled to resign on account of an illness which she had criminally brought on herself; and her friend subsequently secured a clerkship for her, under a false name in the Smithsonian Institution. Among the frequenters of the house, the correspondent states, was another Southern senator, who was accompanied by two young girls--sisters--from his own State, for whom he had obtained government positions, but whom he sent home when the scandal became the subject of general conversation. An aged member of the House from Tennessee and a representative whose term expired with the Forty-fifth Congress were also among those who attended the wine suppers with lady companions. The correspondent adds that the case has been placed in the hands of the detectives, although it is doubtful whether the names of the parties concerned will be made public, threats having been freely made against those inquiring into the subject, and several newspaper men having had the tables turned on them, and been themselves pretty thoroughly investigated.--Balto. American.