mans, depot, and all. Obey orders—that's the beginning and end. Number two is: Use your own judgment with chasers and freights when the tracks are full."
Just then the telephone bell rang. Ralph grasped the receiver.
"No. 4, express, backing in," and Ralph repeating it casually for old Jack's benefit, stepped on the long, narrow plank lining the lever platform.
"Three for the yards switch, 7 for the in main, and 4 for the express shed siding," he pronounced.
It took some muscle to pull over the big heavy levers in turn, which were not operated on the new-style compressed air system.
Knight watched him closely, nodding his head in approval as Ralph closed the switches on limits' 'phoning as the express passed certain points. As a locomotive backing three express cars passed the tower and took the sheds tracks, old Jack observed:
"You'll do. I'll drop in later. Your shift runs till 9 p. m. Then Doc Bortree will relieve you."
"All right, Mr. Knight. And thanks for all your trouble in teaching me," said Ralph.
The old towerman disappeared down the trap
