Yes, the Atlantic! The fears of the two colleagues were realized; but it did not seem as though Robur had the least anxiety about venturing over this vast ocean. Both he and his men seemed quite unconcerned about it and had gone back to their stations.  
Whither was the "Albatross" bound? Was she going more than round the world as Robur had said? Even if she were, the voyage must end somewhere. That Robur spent his life in the air on board the aeronef and never came to the ground was impossible. How could he make up his stock of provisions and the materials required for working his machines? He must have some retreat, some harbor of refuge—in some unknown and inaccessible¹ spot where the "Albatross" could revictual. That he had broken off all connections with the inhabitants of the land might be true, but with every point on the surface of the earth, certainly not.
 
That being the case, where was this point? How had the engineer come to choose it? Was he expected by a little colony of which he was the chief? Could he there find a new crew?
 
What means had he that he should be able to build so costly² a vessel³ as the "Albatross" and keep her building secret? It is true his living was not expensive. But, finally, who was this Robur? Where did he come from? What had been his history? Here were riddles⁴ impossible to solve; and Robur was not the man to assist willingly in their solution.
 
It is not to be wondered at that these insoluble problems drove the colleagues almost to frenzy⁵. To find themselves whipped off into the unknown without knowing what the end might be doubting even if the adventure would end, sentenced to perpetual aviation, was this not enough to drive the President and secretary of the Weldon Institute to extremities⁶?
 
Meanwhile the "Albatross" drove along above the Atlantic, and in the morning when the sun rose there was nothing to be seen but the circular line where earth met sky. Not a spot of land was insight in this huge field of vision. Africa had vanished beneath the northern horizon.
 
When Frycollin ventured out of his cabin and saw all this water beneath him, fear took possession of him.
 
Of the hundred and forty-five million square miles of which the area of the world's waters consists, the Atlantic claims about a quarter; and it seemed as though the engineer was in no hurry to cross it. There was now no going at full speed, none of the hundred and twenty miles an hour at which the "Albatross" had flown over Europe. Here, where the southwest winds prevail, the wind was ahead of them, and though it was not very strong, it would not do to defy it and the "Albatross" was sent along at a moderate speed, which, however, easily outstripped⁷ that of the fastest mail-boat.
 
On the 13th of July she crossed the line, and the fact was duly announced to the crew. It was then that Uncle Prudent⁸ and Phil Evans ascertained⁹ that they were bound for the southern hemisphere. The crossing of the line took place without any of the Neptunian ceremonies that still linger on certain ships. Tapage was the only one to mark the event, and he did so by pouring a pint¹⁰ of water down Frycollin's neck.
 
On the 18th of July, when beyond the tropic of Capricorn, another phenomenon was noticed, which would have been somewhat alarming to a ship on the sea. A strange succession of luminous¹¹ waves widened out over the surface of the ocean with a speed estimated at quite sixty miles an hour. The waves ran along at about eight feet from one another, tracing two furrows¹² of light. As night fell a bright reflection rose even to the "Albatross," so that she might have been taken for a flaming aerolite. Never before had Robur sailed on a sea of fire—fire without heat—which there was no need to flee from as it mounted upwards¹³ into the sky.
 
The cause of this light must have been electricity; it could not be attributed to a bank of fish spawn¹⁴, nor to a crowd of those animalculae that give phosphorescence to the sea, and this showed that the electrical tension of the atmosphere was considerable.
 
In the morning an ordinary ship would probably have been lost. But the "Albatross" played with the winds and waves like the powerful bird whose name she bore. If she did not walk on their surface like the petrels, she could like the eagles find calm and sunshine in the higher zones.
 
They had now passed the forty-seventh parallel. The day was but little over seven hours long, and would become even less as they approached the Pole.
 
About one o'clock in the afternoon the "Albatross" was floating along in a lower current than usual, about a hundred feet from the level of the sea. The air was calm, but in certain parts of the sky were thick black clouds, massed in mountains, on their upper surface, and ruled off below by a sharp horizontal line. From these clouds a few lengthy¹⁵ protuberances escaped, and their points as they fell seemed to draw up hills of foaming¹⁷ water to meet them.
 
Suddenly the water shot up in the form of a gigantic hourglass, and the "Albatross" was enveloped¹⁸ in the eddy¹⁹ of an enormous waterspout, while twenty others, black as ink, raged around her. Fortunately the gyratory movement of the water was opposite to that of the suspensory screws, otherwise the aeronef would have been hurled²¹ into the sea. But she began to spin round on herself with frightful²² rapidity. The danger was immense, and perhaps impossible to escape, for the engineer could not get through the spout²⁰ which sucked him back in defiance²³ of his propellers²⁴. The men, thrown to the ends of the deck by centrifugal force, were grasping the rail to save themselves from being shot off.
 
"Keep cool!" shouted Robur.
 
They wanted all their coolness, and their patience, too. Uncle Prudent and Phil Evans, who had just come out of their cabin, were hurled back at the risk of flying overboard. As she spun²⁵ the "Albatross" was carried along by the spout, which pirouetted along the waves with a speed enough to make the helices jealous. And if she escaped from the spout she might be caught by another, and jerked to pieces with the shock.
 
"Get the gun ready!" said Robur.
 
The order was given to Tom Turner, who was crouching²⁶ behind the swivel amidships where the effect of the centrifugal force was least felt. He understood. In a moment he had opened the breech and slipped a cartridge²⁷ from the ammunition-box at hand. The gun went off, and the waterspouts collapsed²⁸, and with them vanished the platform of cloud they seemed to bear above them.
 
"Nothing broken on board?" asked Robur.
 
"No," answered Tom Turner. "But we don't want to have another game of humming-top like that!"
 
For ten minutes or so the "Albatross" had been in extreme peril²⁹. Had it not been for her extraordinary strength of build she would have been lost.
 
During this passage of the Atlantic many were the hours whose monotony was unbroken by any phenomenon whatever. The days grew shorter and shorter, and the cold became keen. Uncle Prudent and Phil Evans saw little of Robur. Seated in his cabin, the engineer was busy laying out his course and marking it on his maps, taking his observations whenever he could, recording³⁰ the readings of his barometers³¹, thermometers, and <............