corresponding number on the new time-table. But if schedules do not so correspond the train moving under the schedule of the old timetable cannot proceed without orders to do so.

The time and the day on which a new timetable takes effect is generally so arranged that the change of time will make as little trouble in movement of trains as possible.

Enginemen and Conductors are required to sign a receipt for the new time-table and unless such receipt is filed in the Train Dispatcher's office, it should be sent by wire before starting out on the first trip that may come on the time of the new time-table. This is necessary in order that the Train Dispatcher who is in charge of train movement may be assured that Enginemen have the new time-table in their possession and will be governed by same.

Extra trains which are moving over the road when time-tables change are not affected thereby, with the exception that should an extra train hold orders to meet some regular train, which lost its rights by reason of change of timetable, such orders may be disregarded.

The date of a schedule is determined by the

time at which such schedule is due to leave its initial station on such division or subdivision. Any train using such schedule assumes the same date as the schedule. Rule four states that not more than one schedule of the same number and day shall be in effect on any division. By this is meant that not more than one schedule of the same number and day shall be in effect on any portion of a division, that is, No. I of the old time-table may proceed to "C" on the schedule shown on the old time-table and may proceed from "C" to "Z" on the schedule of the new time-table. In this movement it is necessary for train No. 1 to use both the schedule of the old and of the new time-table, of the same number and day, but it does not use both schedules over the same portion of the road.

In case the time on the new time-table is made earlier than the time on the old, but not so much earlier as to put the schedule into a different day, a train using the old schedule may proceed on the new, providing there are no other changes in the schedule. If a schedule is made. later on the new time-table than on the old a train running on the old schedule may pro

ceed on the new, providing that the new schedule has not been made so much later as to put it in another day and also providing that there have been no other changes made in the schedule. In this case, however, the train would have to wait until the schedule of the new time-table was due at such station.

In case schedule No. 1 of the old time-table was due to leave its initial station at II P.M. on Saturday and a new time-table took effect at 12:01 A.M. Sunday, showing No. 1 due to leave its initial station at I A.M., the train on the road could not assume schedule No. 1 of the new time-table for the reason that schedule No. 1, which corresponds in day of leaving with the day of leaving of train No. 1, would be more than twelve hours over-due and, therefore, of no effect. In such case, the train authorized by the old time-table cannot proceed without orders, but train No. 1 of the new time-table may run on time, because it is due to leave its initial station after the time-table takes effect.

When a new time-table takes effect, there are but two ways in which a schedule is effective. It must become due at its initial station after

the time-table takes effect; or a train must be on the road, which was authorized by the old time-table and which corresponds as required and can assume the schedule of the new timetable and continue its trip to the terminal. Supposing the old time-table shows schedule No. 1 from A to F, due to leave A at 1 A.M. and arrive at F at 3 A.M. and new time-table takes effect at 4 P.M., showing No. 1 due to leave A at 5 P.M. and due to arrive at F at 7 P.M. In such a case it would be impossible for No. 1 of the new time-table to run for the reason that the schedule of the old time-table for that day would either have been fulfilled or would have become twelve hours late before the new timetable took effect. In no case must a train on the road at the time new time-table takes effect assume a schedule of corresponding number, unless such schedule corresponds as to class, day of leaving, direction, and initial, and terminal stations.

Making Time-Tables

In the make-up of time-tables not more than two times are given for a train at any point;

where one is given, it is, unless otherwise indicated, the leaving time; when two times are given, they are the arriving and leaving time. A train must not arrive at a station ahead of its arriving time, when shown, and it must not leave a station ahead of its leaving time.

Unless otherwise indicated, the time shown applies to the switch where an inferior train enters the siding; if there is no siding, it applies to the place from which fixed signals are operated; where there is neither siding or fixed signals, it applies to the place where traffic is received or discharged.

Where one train is to pass another or meet an opposing train attention is called to it by figures in full-faced type; that is, the time of each schedule concerned is in heavy type at such station. In case trains are to be met or passed at a siding, which extends between two adjoining stations, the time at each end of the siding will be shown in full-faced type. In case there are one or more trains to meet or pass a train between two times or more than one train to meet a train at any station, attention is called to it by a special sign. These signs vary