Another of the men arrested is astreet car operative, said to be a dose friend of the former employe. The woman is alleged to have been with the former employe on the night nf the robbery and is understood to beunder questioning as to the man’s whereabouts at the tune of the murder and robbery.All except the street car operative, who was arrested in Maryland and detained at the Bethesda sub station, are being questioned in the District by officers from Washington. Baltimore and Montgomery County.Prints Measured.The footprints in the snow, leading from the automobile, which tracks showed had been parked nearby, were measured by police and reported to have been made by a man wearingAbout a size seven shoe. The prints leading fiom where the automobile stood to the office were made by a man walking, it \*a.s said, while those going back toward the automobile were made by a man who was running. There also were marks in the snow near the car. made, apparently, by a man who had fallen. Police were uncertain, however, whether some one went down in a fight.Footprints at the bridge over Rock Creek where Smith was thrown in were obliterated by a throng of persons who flocked to the scene before police were able to obtain measurements. From the marks in the snow it. was indicated Smith had been pulled to the creek by two men who preceded him