Davis came to the cabin window, wiping the sweat from his forehead.
"There's only one chance," he shouted above the roar of the engines. "I've got to fling hand grenades into the sea just ahead of us. They may clear a way for us to rise."
Nita silently began to pass him up the small but deadly missiles. Her face was set and utterly pale, but she was rising to the emergency with spirit.
An explosion sounded fifty yards away. Another thirty yards away. A third but twenty yards away, and the plane heaved and leaped from the concussion. The blast of air nearly blew the three men from the wings into the waiting mass of animalcules. A huge volume of ill-smelling spume was cast upon the plane, and by its velocity washed away a great portion of the Silver Menace that still clung to it. The propellers dragged at the plane, and it suddenly darted forward down the narrow lane of open water cleared by the three explosions. All three of the men were clinging to struts out on the plane and there was no one at the controls, but Nita bravely grasped the joy stick, and as the end of the open water drew rapidly near she jerked it backward with an inward prayer. The plane lifted sluggishly, scraped the top of the silver sea, and rose. With an inexperienced pilot at the wheel, with the three men precariously balanced on the wings, it headed straight for the broadest part of the Atlantic.
The motors roared as the plane continued to rise. Nita was white-faced and frightened, but Davis' life was depending upon her. With an amazing coolness, despite the lump in her throat that threatened to choke her, she swung the steering wheel as she had seen Davis do. The plane turned in a wide half circle and headed for the shore again, still rising. Davis, out on the wing, took a desperate chance. He motioned wildly to Evelyn, who flung wide the side window. Then, diving as in a football game, Davis flung himself for the opening. His hands caught in the frame and he drew himself inside. As he laid his hands on the controls Nita incontinently fainted, but Evelyn was there to attend to her, and Davis sped for home at the topmost speed of which the plane was capable, the other two men still clinging to the struts far out on the wings.
Alexander Morrison, steamship magnate and many times a millionaire, looked helplessly from the window of his library. His daughter, Nita, was visiting Evelyn Gerrod, a college classmate, and there was no one to sympathise with him in his misfortune. He faced absolute ruin. The whole world faced death, but that did not impress Morrison as much as the absolute financial disaster that had come upon him. His ships, at their docks, were useless and already incrusted with the silvery slime that threatened the whole earth. His whole fortune was invested in those vessels. When the government had thrown up its hands over the problem of checking the invasion of the Silver Menace, far less of clearing the seas again, Morrison had gone hopelessly to his little country home on one of the infrequent islands of the Hudson. It was a high and rocky little island, and his house was built upon the top of its single peak. He could look out upon the now solid Hudson and see miles and miles of the silver, evil-smelling jelly.
A little bridge connected the island with the mainland, to which a well-made, winding road led down. Morrison stared through his closed library window—closed to keep out the slimy, disgusting odor of the Silver Menace—and cursed the microscopic animals that had ruined all commerce and now threatened to destroy humanity. Of all his great fleet but two of the smallest vessels remained afloat. They were high up in northern seas, still unvisited by the jellylike animalcules. Where his tramp steamers and passenger lines had visited nearly every port upon the globe, now two small ships plied between Greenland and the most northern part of the American continent.
The silvery jelly was clambering up the rocky shores of his little island, but beyond cursing it Morrison paid no attention. He was absorbed in his misfortune, utterly preoccupied with the calamity that had overwhelmed him. For two days he moved restlessly about his house, smoking innumerable cigars, eating hardly anything, thinking of nothing but the extent of the disaster to his fortune. He had offered half a million dollars to whoever developed a successful means of combating the Silver Menace. Other men whose wealth, like his own, was solely invested in ocean transportation had joined him in offering rewards, until now a purse of two and a half millions awaited the successful inventor. Multitudes of freak proposals had been made, the majority of them suggesting that sea gulls be trained to eat the silver animalcules, or that fish be bred in large numbers to consume them. In practice, of course, neither fish or birds would touch the disgusting jelly. The arctic seas were teeming with practically all the fish from the Atlantic Ocean. For once the Eskimos had no difficulty in securing enough to eat. The inhabitants of the seas in which the Silver Menace had appeared, without exception, fled from its sticky masses.
Morrison remained shut up in his house, sunk in despondency and gloom, while the silvery jelly crept up the shores of his little island slowly but surely, higher and higher day by day. His butler came to him with a white face.
"Mr. Morrison, sir," said the butler hesitatingly, "the gardener says, sir, that that there silver stuff is creepin' up higher, sir."
"All right, let it creep!" snapped Morrison angrily.
"But, sir," ventured the butler once more, "it's creepin' up on the bridge."
"Have it shoveled down again," said Morrison irritably. "Don't bother me."
The butler went out of the room, and ten minutes later the two gardeners went down to the bridge with shovels. They scraped and shoveled industriously, and when darkness fell the bridge was clear. But next morning showed the bridge a mass of shining silver, and not only the bridge, but fifty or a hundred yards of the roadway and turf leading up to it. The animalcules had come upon the green grass and it had been used for food, so that they were multiplying rapidly. The creeping movement of the silvery tide could be distinctly seen. The butler came to Morrison in a panic.
"Oh, Mr. Morrison, sir," he said tremulously, "the bridge is covered again and the horrible stuff is coming up to the house. You can see it move, sir. We'll all be suffocated when it catches us, sir."
Morrison shook his head impatiently.
"Don't bother me."
The butler was trembling fitfully, "Beg pardon, sir, but the men says as they won't stay no longer, and they're going to try to get over the bridge to the mainland, sir."
"Very well, let them."
The butler left the room. Presently Morrison heard an uproar outside. The butler was protesting at the top of his voice against something. Morrison went out to see what was the matter. Even his indifference was penetrated by the sight he saw. The silvery slime had crept up to a point but a hundred yards from the house, and was still slowly advancing. Half a dozen servants were bringing out one of Morrison's cars, and were evidently planning to make a dash in it, despite the efforts of the butler to hold them back. Morrison stepped forward.
"Wait a moment, James," he said quietly. "Let the men have the car, but it would be better for one to make the attempt first. There's no use all risking their lives until we know whether there's a chance of success."
His chauffeur was hastily tuning up a motor cycle.
"I'll make a try, sir," he said grimly. "I'll circle the house once or twice until I get up speed, and then shoot for the bridge. I think I'll make it."
Morrison nodded. The motor cycle caught and began to run. The chauffeur circled the lawn once—twice. His machine was running at a terrific speed. He came around the third time, swung on the handlebars, and shot straight for the bridge. The silvery slime shot away from his front wheels in twin waves as he cut through the mass. The throttle was wide open and the engine worked manfully. Straight for the bridge he went, plowing through the thick, sticky mass. Then the accumulated volume of jelly before him broke down the impetus of his cycle. In spite of all he could do it slowed down, down. It tottered weakly and fell. The chauffeur leaped from it and plunged forward. He slipped and fell, then struggled to his feet again. Five feet more, ten feet more. He was like an animated statue of burnished metal. Thick ropes of silver clung to him as he struggled forward. No man could keep up such exertions. He labored with almost insane force, but his progress became slower and slower. At last he moved forward no more, but still straggled weakly. Then he toppled gently from his feet. The slime covered him silently and placidly. The watchers gasped. The silver tide grew slowly toward the house.