Show device for ietter carriers the department in washington Is experimenting among the washington letter carriers with a device tor for keeping tab on carriers as they make their rounds from rom box to box and it if the experiment is decided to be ba a success the new system will probably be adopted tor for the th entire country the device la Is founded on the same Dorl principle act as the alarm which night watchmen pull once an hour or halt half hour attending to business it Is attached to the inside of letter boxes and on return from his route the carrier deposits slips of paper which contain an accurate register of the places he has visited it adopted by the department the device will be intended as much for or the protection of honest faithful carriera as tor for the detection of those who are inclined to be shiftless and ca barele cirel rele tM |