MOVEMENT 



37 



train proceeds on its way particulars are notified, both 

 as regards the direction in which it is going and 

 the time occupied. But if the train stops, its place 

 on the chart only changes as far as the time-axis is 

 concerned, and consequently the stoppages are ex- 



FAR13 



Mor+t 

 MONTERCAU 



" MIDDAY 



Fig. 26.— Chart to express the movements of trains along a railway. (Ibry's method.) 



pressed by horizontal lines more or less elongated. 

 The inclination of the line expresses the speed of 

 tho train. The faster the train moves the more nearly 

 vertical does the line become. Express, fast, through, 

 and stopping trains can thus be distinguished at a 



