Half an hour later the train stopped at Moorlock. Alexander sprang to the platform and hurried up the siding, waving to Philip Horton, one of his assistants, who was anxiously looking up at the windows of the coaches. Bartley took his arm and they went together into the station buffet.
"I'll have my coffee first, Philip. Have you had yours? And now, what seems to be the matter up here?"
The young man, in a hurried, nervous way, began his explanation.
But Alexander cut him short. "When did you stop work?" he asked sharply.
The young engineer looked confused. "I haven't stopped work yet, Mr. Alexander. I didn't feel that I could go so far without definite authorization from you."
"Then why didn't you say in your telegram exactly what you thought, and ask for your authorization? You'd have got it quick enough."
"Well, really, Mr. Alexander, I couldn't be absolutely sure, you know, and I didn't like to take the responsibility of making it public."
Alexander pushed back his chair and rose. "Anything I do can be made public, Phil. You say that you believe the lower chords are showing strain, and that even the workmen have been talking about it, and yet you've gone on adding weight."
"I'm sorry, Mr. Alexander, but I had counted on your getting here yesterday. My first telegram missed you somehow. I sent one Sunday evening, to the same address, but it was returned to me."
"Have you a carriage out there? I must stop to send a wire."
Alexander went up to the telegraph-desk and penciled the following message to his wife:--
I may have to be here for some time. Can you come up at once? Urgent.
BARTLEY.
The Moorlock Bridge lay three miles above the town. When they were seated in the carriage, Alexander began to question his assistant further. If it were true that the compression members showed strain, with the bridge only two thirds done, then there was nothing to do but pull the whole structure down and begin over again. Horton kept repeating that he was sure there could be nothing wrong with the estimates.
Alexander grew impatient. "That's all true, Phil, but we never were justified in assuming that a scale that was perfectly safe for an ordinary bridge would work with anything of such length. It's all very well on paper, but it remains to be seen whether it can be done in practice. I should have thrown up the job when they crowded me. It's all nonsense to try to do what other engineers are doing when you know they're not sound."
"But just now, when there is such competition," the younger man demurred. "And certainly that's the new line of development."
Alexander shrugged his shoulders and made no reply.
When they reached the bridge works, Alexander began his examination immediately. An hour later he sent for the superintendent. "I think you had better stop work out there at once, Dan. I should say that the lower chord here might buckle at any moment. I told the Commission that we were using higher unit stresses than any practice has established, and we've put the dead load at a low estimate. Theoretically it worked out well enough, but it had never actually been tried." Alexander put on his overcoat and took the superintendent by the arm. "Don't look so chopfallen, Dan. It's a jolt, but we've got to face it. It isn't the end of the world, you know. Now we'll go out and call the men off quietly. They're already nervous, Horton tells me, and there's no use alarming them. I'll go with you, and we'll send the end riveters in first."
Alexander and the superintendent picked their way out slowly over the long span. They went deliberately, stopping to see what each gang was doing, as if they were on an ordinary round of inspection. When they reached the end of the river span, Alexander nodded to the superintendent, who quietly gave an order to the foreman. The men in the end gang picked up their tools and, glancing curiously at each other, started back across the bridge toward the river-bank. Alexander himself remained standing where they had been working, looking about him. It was hard to believe, as he looked back over it, that the whole great span was incurably disabled, was already as good as condemned, because something was out of line in the lower chord of the cantilever arm.
The end riveters had reached the bank and were dispersing among the tool-houses, and the second gang had picked up their tools and were starting toward the shore. Alexander, still standing at the end of the river span, saw the lower chord of the cantilever arm give a little, like an elbow bending. He shouted and ran after the second gang, but by this time every one knew that the big river span was slowly settling. There was a burst of shouting that was immediately drowned by the scream and cracking of tearing iron, as all the tension work began to pull asunder. Once the chords began to buckle, there were thousands of tons of ironwork, all riveted together and lying in midair without support. It tore itself to pieces with roaring and grinding and noises that were like the shrieks of a steam whistle. There was no shock of any kind; the bridge had no impetus except from its own weight. It lurched neither to right nor left, but sank almost in a vertical line, snapping and breaking and tearing as it went, because no integral part could bear for an instant the enormous strain loosed upon it. Some of the men jumped and some ran, trying to make the shore.
At the first shriek of the tearing iron, Alexander jumped from the downstream side of the bridge. He struck the water without injury and disappeared. He was under the river a long time and had great difficulty in holding his breath. When it seemed impossible, and his chest was about to heave, he thought he heard his wife telling him that he could hold out a little longer. An instant later his face cleared the water. For a moment, in the depths of the river, he had realized what it would mean to die a hypocrite, and to lie dead under the last abandonment of her tenderness. But once in the light and air, he knew he should live to tell her and to recover all he had lost. Now, at last, he felt sure of himself. He was not startled. It seemed to him that he had been through something of this sort before. There was nothing horrible about it. This, too, was life, and life was activity, just as it was in Boston or in London. He was himself, and there was something to be done; everything seemed perfectly natural. Alexander was a strong swimmer, but he had gone scarcely a dozen strokes when the bridge itself, which had been settling faster and faster, crashed into the water behind him. Immediately the river was full of drowning men. A gang of French Canadians fell almost on top of him. He thought he had cleared them, when they began coming up all around him, clutching at him and at each other. Some of them could swim, but they were either hurt or crazed with fright. Alexander tried to beat them off, but there were too many of them. One caught him about the neck, another gripped him about the middle, and they went down together. When he sank, his wife seemed to be there in the water beside him, telling him to keep his head, that if he could hold out the men would drown and release him. There was something he wanted to tell his wife, but he could not think clearly for the roaring in his ears. Suddenly he remembered what it was. He caught his breath, and then she let him go.
The work of recovering the dead went on all day and all the following night. By the next morning forty-eight bodies had been taken out of the river, but there were still twenty missing. Many of the men had fallen with the bridge and were held down under the debris. Early on the morning of the second day a closed carriage was driven slowly along the river-bank and stopped a little below the works, where the river boiled and churned about the great iron carcass which lay in a straight line two thirds across it. The carriage stood there hour after hour, and word soon spread among the crowds on the shore that its occupant was the wife of the Chief Engineer; his body had not yet been found. The widows of the lost workmen, moving up and down the bank with shawls over their heads, some of them carrying babies, looked at the rusty hired hack many times that morning. They drew near it and walked about it, but none of them ventured to peer within. Even half-indifferent sightseers dropped their voices as they told a newcomer: "You see that carriage over there? That's Mrs. Alexander. They haven't found him yet. She got off the train this morning. Horton met her. She heard it in Boston