Our hero nodded, and made up his mind to do as he was told. He waited for the conductor to get on to the footboard, and followed promptly. Very soon they had gained the next coach.
"Next's Number four," shouted the conductor. "Let's get on the roof. We can make along there easier, and reach 'em better. Did yer hear that? They're at it."
The sharp sound of a pistol shot came to the ears of the two, and after it a shrill cry. They scrambled to the top of the coach as quickly as possible, and then went on hands and knees, and made their way along it. At the far end they descended by means of the iron steps and rails, and again took to the footboards.
"Now get ready fer shootin'," shouted the conductor. "Thar'll be a man posted at this end, and I'm going to fire through the window at him. Jest be prepared to hop right in and take a shot at the others."
Jack hung to the step, closely hugging the coach, and watched the figure of the conductor as he scrambled farther along. He saw him stand to his full height and peer in through a window. His revolver was raised swiftly, and then there came a sharp crack from the inside of the coach. The conductor dropped from the footboards without a sound, and Jack caught a fleeting glimpse of his body bounding over the side track. He was alone now, and the safety or otherwise of the passengers depended upon him.
"I'll do it," he said to himself, his blood afire, and all hesitation gone. "If I break in through the door I shall be dropped for a certainty. And if I attempt to shoot through the window I shall meet with the conductor's fate. I'll try the roof again."
He went scrambling up, and within a minute had reached one of the round lanterns through which the lamps were dropped. Lifting the lid, he found he had a fair view of the interior, for there was no lamp in this lantern, and in those days the apertures were very large when compared with modern fittings. Directly below him he detected a carpeted floor and one end of a seat, while a pair of legs stretched over the carpet. They evidently belonged to some unfortunate individual who had been shot.
"Likely enough the one whose call we heard," thought Jack. "Now, let me think. From his position he fell on to his back. He didn't tumble face downwards and then roll over. That means that the man who shot him is somewhere underneath me. I'll lean over and get a better view."
He was in the act of thrusting his head into the wide lantern, when sounds at the side of the track caught his attention. Even in spite of the roar of the train he heard shouts, while an instant later the darkness was punctuated by red flashes. At the same time he became aware of the disagreeable fact that the spluttering, hissing sounds round about him were caused by bullets. Then he grasped the significance of the situation.
"Gee!" he cried. "Then they are the friends of those three rascals who boarded the cars. Now I see through the whole business. They were to tie up the conductor, and then put the brakes on. That would bring the train to a halt on the incline, and those men out there would ride up and support the robbery. Ah! They're done nicely! We've run through them. We shall see what's going to happen."