Swan sat silent. He saw the dark perspiring bodies of the Indians who were laying ties, and his lifelong ambition to be a great engineer suddenly presented itself to him in the old strong unemotional way.

"For science is a cruel mistress. She exacts her yearly tribute of flesh and blood like the dragons of ancient pagan mythology."

This had been said by an eminent scientist who had addressed his graduating cla.s.s. Swan had heard it then and remembered it now. He clearly remembered that hot June morning ten years ago. Some young maple leaves had made a lovely pattern on the blue northern sky outside the uncurtained windows of the lecture-hall. He remembered that he had looked through the window and vowed that he would never give up.

He organized two bands of men, one to work by moonlight and one by sunlight; but it was necessary for him to overlook them both, day and night, so it happened that there were just two hours in the twenty-four when he could find any rest. This was when the daily tropical storm broke, late in the afternoon, and all the workmen scampered for shelter. Swan crawled into a shanty the men had put up to hold their tools, and wrapping himself in a blanket, slept until the storm was over. That is to say, for three or four times he slept, but gradually he found it impossible to get any rest, and n.o.body knew the agonies he endured fighting off the fever, which he felt had marked him for its own. He never looked forward longer than twelve hours, thinking always that the next day would decide his fate, and the next day never did. "If I can keep it off till to-morrow, I guess it won't come back," he repeated, mechanically, standing in the moonlight and dosing himself and bossing the men. But in the morning there was never any abatement in those deadly symptoms which told him that the period of incubation would soon be over; and it almost seemed to him as if his cruel mistress was saving him in some miraculous way to complete her work, for it was not until the evening of the ninth day, when the railroad was finished and the last man paid off, that his temperature rose to fever-heat, his pulse quickened, and his tongue became congested, and this demon of the tropical swamp claimed him for its own.

Early on the morning of the 25th, a Pacific mail-steamer touched at the little port of Zacatula, and a man was put off who came down from San Francisco to do business for the company in the event of the railroad not being completed. He was greatly astonished when Pilchard showed him that the last day's work had been done.

"Then," said the agent, mopping his perspiring bald head, "we may say that you've carried out the contract to the letter, to the very minute. You say you only paid off the men last night?"

"Yes," answered Pilchard, with his engaging smile, and casting a possessive glance down the front of his white trousers. "And it was an awful rush to get the job done." But in spite of Pilchard's sleek figure and social smile, he looked pale that morning. The hot sunlight that bathed the end of the dock met no responsive glow in his cheeks.

The agent hung his handkerchief over the top of a post to dry it, and looked more closely at his companion. "Anything the matter?" he asked, kindly. "You certainly haven't lost anything on the job?"

"No--no." Pilchard brought out that ever-ready smile that was so delightful. "But it's about time to go home. This is a terrible climate. We've lost every white man that came down, eleven all told, except myself and--and--one other, who's dying over in that shed now.

Maybe--maybe--he's dead--" Pilchard jerked with his thumb towards a shanty just where the docks joined the land....

In this rude shanty, knocked together by the workmen to hold their tools, on a heap of sacks and blankets, Swan lay as he had dropped the night before. Pilchard had found him there, and the full moon coming in at the wide opening had revealed a fearful sight--Swan in the throes of terrific fever, his face scarlet, his eyes ferrety and congested, and his swollen tongue lolling between his lips. When he saw Pilchard he asked in a strange voice for water. Pilchard brought him some and felt his forehead. It seemed on fire.

"Pilchard," began Swan, in a deliberate voice, as if he were trying to fight off the delirium, "the swamp got into me, after all. I've taken the fever."

Pilchard, appalled by the terrible sight before him, and the things it suggested, which he could not help but see, leaned against the rude wall, and for once his self-possession deserted him. "Swan," he faltered, "Swan--for G.o.d's sake--"

"Hush," Swan interposed, in that same deliberate voice. "Don't lose your head. I'm keeping mine. Am I talking sense?"

"Yes, yes, Swan. Perfectly correctly."

"Then I'll tell you what to do." Swan spoke more and more slowly as the fire mounted to his brain and besieged it. "There's every symptom of fever. You can't deny that."

"Symptoms, Swan? I don't see any. You're worn out, poor fellow. That's all."

"Then what's this?" Swan opened his mouth and showed his scarlet tongue. "And this?" He tore open the breast of his shirt and showed the congested condition of his skin. "But I'll fight death as I fought the fever! I'm not going to die. There's too much for me to do in the world! I'll be a great engineer. I'll make her proud. I vowed it when we looked out over the waves and I wanted to take her in my arms. See here!" and suddenly seizing a pickaxe from the ground beside him, he swung it around his head and sent it whizzing past Pilchard's ear, out through the opening of the shanty. "I've got my muscle and I've got my brain and I'll keep my life. I deserve to live. I deserve it as payment for putting the job through. I'll keep my wife here, too, here in the engine-room, with the pines behind us, and I can look after the men then. Who's that leaning against the wall? Pilchard? Poor fool!

Why did you boast you were the only man who had ever loved a woman?"

"Me boast! Heaven forbid," faltered Pilchard.

"Then," shouted Swan, suddenly sitting up and striking out with both arms, "take these things away. All these little black things that are pouring over me. It's a regular shower. It must be a whole city. No!

No! They're sparks! They're fire! They burn! They burn! Take the wheels away from me! They're grinding me like corn--oh, Lord! it's heavy, it's heavy! There, there! It crushes me! Now, now it's over.

This is--death--" And he sank back, oppressed by a sudden, and overwhelming load of oblivion.

Swan grew worse toward morning, and though the disease had only attacked him at sunset the night before, so rapid and terrible were its onslaughts that by the time the sun rose a complete physical collapse had occurred. His pulse had fallen below normal, and his skin a.s.sumed a strange yellow hue, the color of a lemon, and in these signs and the constant hiccough which convulsed the death-stricken frame Pilchard guessed properly what the termination must be. The end would come easily. Swan had ceased to suffer.

When light crept gray and silent into the shanty, Pilchard stood and looked at Swan's prostrate form. No sound came to them but the gentle lapping of the waves. Sober as a dove Day hovered in the sky, and that solemn change which is Death was somewhere near, hiding and waiting; and Pilchard and Death and the breaking Day were for one second alone.

And Pilchard was overwhelmed with terror. Some spectre had seized him, and he could not shake it off. He looked once more at the dying man, at his closed eyes and his still body, momentarily convulsed by the final signs of life, like a great piece of machinery when the steam power is gradually running down. Then he turned and broke away, to take a bath and to take a drink and then go to meet the steamer from San Francisco....

"Eleven? You don't say. Fever, I suppose?"

"Yes. We tackled three swamps on our way down from Mexico."

"That so? Well, it's worth some sacrifice. It's a good job. I wouldn't 'a' undertaken it myself."

"I wouldn't do it again."

They walked down the dock....

Swan opened his eyes and looked through the wide opening of the shanty out to where the blazing sun struck the hot water of the little harbor. He hardly remembered where he was. Oh yes! He must get up and go down-town. In a minute, when he was fully awake. And he closed his eyes again and heard the accustomed whir of machinery, and knew that he was in the engine-room. One of the workmen needed to be spoken to; he was the filthiest of the lot, and Swan was the only man who could control him. Suddenly Swan opened his eyes again and saw that this same workman had entered the shanty and was standing beside him. He instantly recognized the man's greasy black shirt.

"For science is a cruel mistress," the man said. "She exacts her yearly tribute of flesh and blood."

But, singularly enough, these words meant something entirely different. Swan looked curiously at the workman and saw that he too was really somebody else. The man smiled and, leaning over, gently raised him up, and for the first time in his life Swan felt himself encircled by a woman's arms, and he tasted a strange, delicious joy awakening deep within him that knowledge of reciprocal love which slumbers in the heart of every man.

"And you did it all for me," she said.

"Did what?" he asked her.

"Built the road?"

"Yes," he whispered, closing his eyes again, filled with this new strange joy.

"And now we'll go home together to the North, where the maple leaves make a lovely pattern against the blue sky."

He knew nothing for a minute, and then she spoke again:

"Well, it's a good job. I'll see that you get pushed along. The company 'll have plenty more work; big pay, too. This business has made your name. You're a wonderful fellow! You say you worked night as well as day?"

"For eight days, yes."

It was Pilchard's voice. He was talking to another man. They were leaning heavily against the rough wall of Swan's shanty. A horrible sensation came over the sick man, that sensation experienced by men who emerge from some unnatural mental condition, who are recalled by one sentence, often by one word, which acts like a key and opens again to their terrified vision the horrible realities of actual life. Swan raised his arms to bring that woman's face close to his, but he could not find it. He opened his eyes, and tears of weakness watered his cheeks. He was alone in the hovel knocked together by the men to hold their tools, and the work for which he had given his life was being claimed outside by another man....

The agent leaned against the side of the shanty, gazing reflectively at his steamer, which was anch.o.r.ed half a mile from sh.o.r.e. "I'm going clear round to New York. You'd better get aboard and come with me," he proposed to Pilchard, to whom he had taken a fancy. "Good Lord!" he suddenly shouted, leaping forward. "Is this the shed where you said a workman was dying of fever? Let's get out quick or we'll take the infection."

But Pilchard, pale as death, put up a warning hand. "Yes, let's clear out--let's get to sea before I go crazy! But--but--don't speak so loud. _He may hear_!"

He had heard every word. His faculties, numb with death, sprang instantly into life. He leaped to his feet and left the shanty, momentarily endowed with his full strength, and facing the two men, spoke three times: "My work! My work! My work!" His eyes were on Pilchard all the time, and that look pierced like a sword; it penetrated to the very foundations of his being....

Pilchard caught the body as it fell and lowered it to the ground, and then looked at the agent with a scared face to see how much he knew.

The agent had leaped still farther away, and now was crouching, livid with fear, before this man whose last words had been words of delirium. No, he knew nothing. Pilchard alone knew the extent of his own deceit, which dead lips could never disclose. He alone knew of that half-formed idea he had not dared to mature, which had come to him a year ago when he looked at Swan's resolute face in the engine-room; and he alone in all the world could ever know of the terror which had possessed him at daybreak in the shanty when he had turned in a panic and run away--from what? ...