The reader of such items never thinks the engineer and crew are mere mechanical agents, small cogs in a huge machine. They do their part well, but the little office of the train dispatcher is a red-hot place where they have a red-hot time, where one tap of the sounder may cover the fate of numberless extras, specials and delayed trains. The young engineer took particular notice of the dispatcher's office on the present occasion. This was because so much of pending trouble seemed to involve the wire system of the Great Northern. The wire tapping episode, the prototype routing chart at the chicken farm, had aroused suspicion in his mind. Then, too, Ralph had often had a fondness and an admiration for this branch of the service. At one time, in fact, he had studied telegraphy with the purpose in view of following it up, and old John Glidden, a fast friend of his, had invited him to the dispatcher's office and had taught him a great many useful things in his line. Glidden was the first trick dispatcher and was not on duty just now. Ralph nodded to two subordinates at their tables, and snuggled back into his comfortable seat with the time and interest to look over things. The interior of the dispatcher's office was not very sumptuous. There was a big counter at one side of the room. This contained the train register, car record books, message blanks and forms for various reports. Against the wall on one of the other sides was a big blackboard known as the call board. Ralph read here the record of the probable arrival and departure of trains and the names of their crews. Also the time certain crews were to be called. About the middle of the room in the recess of a bay window was the dispatcher's table. Ralph only casually knew the man in charge. His name was Thorpe, a newcomer, and an expert in his line, but gruff and uncivil in the extreme, and he had few friends. In front of him was the train sheet containing information exact and absolute in its nature of each train on the division. On the sheet was also a space set apart for the expected arrival of trains from the other end and one for delays. Glidden had once gone over one of these sheets with Ralph with its loads, empties and miscellaneous details, and Ralph knew that the grim, silent man at the table must know the precise location of every train at a given moment, how her engine was working, how she had done along the road, and all about her engineer and conductor. Ralph spent nearly a half an hour in the dispatcher's room. Then he went down to the depot. An extra was just leaving for the west. He paused to have a cheery word with the engineer and fireman, whom he knew quite well. They were getting ready for the orders to pull out, when the three of them stared hard at a flying form coming down the track. "Hello," observed the engineer, "it's Bates." "Yes, the second trick man in the dispatcher's office," nodded the fireman. "Wonder what's up with him?"