Cost of Repairs.
A.R.S.T.U.V.W.X.
1$ 87.64$ 1,293.80$ 115.00$ 223.40$ 66.32$ 289.72$ 2,876.41
2106.851,646.9082.5069.6575.14144.793,112.81
393.851,489.65187.50178.2563.61241.863,113.94
4171.851,719.55212.50203.95100.13304.083,620.18
5144.861,628.80202.00240.55114.98355.533,666.50
6173.921,884.5010.00172.3563.65236.003,346.68
897.341,593.05150.00110.75106.69217.443,414.13
9108.531,625.80200.00139.80175.48315.283,918.02
10108.381,669.55205.00207.55109.78317.334,041.93
11111.831,126.755.00413.9589.76503.712,558.29
12106.311,405.1025.0037.4527.1764.622,519.78
30142.711,719.56212.50144.5077.52222.024,118.15
31152.161,554.55205.00642.50432.861,075.364,703.66
32108.401,186.40172.001,729.70438.402,168.104,752.00
34108.401,186.40137.001,522.10781.642,303.744,313.48
1,823.8022,603.452,121.006,036.452,723.138,759.5854,075.96

A. Number of Engine.
Y. Bushel Coal.
Z. Gal. Engine Oil.
AA. Pound of Tallow.
BB. Repairs.
CC. Fuel.
DD. Stores.
EE. Wages E. and F.
FF. Cleaning.
GG. Total.
HH. Car Mileage.

[Table—Part 4 of 4]

M'ls run to one.Cost per Mile Run For.
A.Y.Z.AA.BB.CC.DD.EE.FF.GG.HH.
11.5122.334.501.7606.6400.5307.8900.6117.43177,659
21.1126.827.700.9407.3400.6910.6900.5320.19197,203
30.977.717.402.3210.5800.9014.3102.0430.15182,402
42.7127.232.800.9203.6905.2305.2400.6415.72139,422
52.5128.241.201.0804.0600.4404.9600.6111.15135,780
63.1140.436.300.7203.2200.5305.8200.0310.32
81.5147.837.901.0906.8400.4908.0400.7617.22305,024
91.4150.048.501.3006.8800.4006.7000.8216.10383,682
101.5195.446.501.2306.7700.3106.4900.7915.59409,035
113.0173.636.402.1303.4300.4704.7700.0210.82
122.0171.023.500.3605.1100.5907.8200.1414.0266,834
302.3185.474.900.5304.4000.3404.1500.5109.93231,554
312.2154.150.802.8704.5800.4004.1500.5412.54202,289
321.6129.531.212.1106.2500.6006.6400.9626.56184,083
343.2108.535.511.4103.4800.5405.2900.6721.39107,060
2.5148.138.502.3104.9800.4805.9700.5514.292,722,027

The master car-builder has charge of the shops where cars are built and repaired, and of the car-inspectors who are stationed at central and junction points to prevent defective cars being put into the trains.

Formerly each railroad used its own cars exclusively, and through freights were transferred at every junction point. This involved such delay and expense that railroads now generally permit all loaded cars to go through to destination without transfer, and allow each other a certain sum for the use of cars. Usually this is about three-quarters of a cent for each mile which the car travels on a foreign road. This involves a great scattering of cars, and an extensive organization to keep record of their whereabouts and of the accounts between the companies for mileage.[15] This organization will be referred to more fully in connection with the department of transportation. But the joint use of each other's cars makes it necessary that there should be at least enough similarity in their construction and their coupling appliances to permit their indiscriminate use upon all roads. And conventions of master car-builders have recommended certain forms and dimensions as standards, which are now in general use.

There is much convenience in this, but one disadvantage. It requires almost unanimous action to introduce any change of form or of construction, however advantageous it may be. And to secure unanimous action in such matters is almost as hard as it would be to secure unanimity in a change in the spelling of English words. Still there is progress, though slow, toward several desirable reforms, the most important of which is the adoption of a standard automatic coupler (see [p. 142]).

Having shown how the property of all kinds is kept in efficient condition, we next come to its operation. This is called "conducting transportation," and the officer in charge is usually called the superintendent of transportation. All train-despatchers, conductors, train-men, and telegraph operators are under his immediate control. He makes all schedules and provides all extra and irregular service that the traffic department makes requisition for, himself calling upon the superintendent of machinery for the necessary locomotives, switching engines, and cars. It is his especial province to handle all trains as swiftly as possible, and to see that there are no collisions. It is impossible to detail fully the safeguards and precautions used to this end, but the general principles observed are as follows:

First, a general time-table or schedule is carefully made out for all regular trains upon each division, showing on one sheet the time of each train at each station.

This schedule is all that is needed so long as all trains are able to keep on time, and there are no extras. Trouble begins when regular trains cannot keep on schedule, or when extra trains have to be sent out, not provided for on the schedule. A diagram, or graphic representation of this schedule, upon a board or large sheet of paper, is an important feature of the office regulating train-movements. Twenty-four vertical lines divide the board into equal spaces representing the twenty-four hours of the day, numbered from midnight to midnight. Horizontal lines at proportionate distances from the top represent the stations in their order between the termini, represented by the top and bottom lines of the diagram. The course of every train can now be plotted on this diagram in an oblique line joining the points on each station line corresponding to the time the train arrives at and leaves that station. The cut on the opposite page will illustrate. It represents a road 130 miles long from A to N, with intermediate stations B, C, D, etc., at different distances from each other, and six trains are shown as follows: