What would be the consequences of this sudden and complete disruption, Servadac and his people hardly dared to think.

The first change that came under their observation was the rapidity of the sun’s appearances and disappearances, forcing them to the conviction that although the comet still rotated on its axis from east to west, yet the period of its rotation had been diminished by about one-half. Only six hours instead of twelve elapsed between sunrise and sunrise; three hours after rising in the west the sun was sinking again in the east.

“We are coming to something!” exclaimed Servadac. “We have got a year of something like 2,880 days.”

“I shouldn’t think it would be an easy matter to find saints enough for such a calendar as that!” said Ben Zoof.

Servadac laughed, and remarked that they should have the professor talking about the 238th of June, and the 325th of December.

It soon became evident that the detached portion was not revolving round the comet, but was gradually retreating into space. Whether it had carried with it any portion of atmosphere, whether it possessed any other condition for supporting life, and whether it was likely ever again to approach to the earth, were all questions that there were no means of determining. For themselves the all-important problem was — what effect would the rending asunder of the comet have upon its rate of progress? and as they were already conscious of a further increase of muscular power, and a fresh diminution of specific gravity, Servadac and his associates could not but wonder whether the alteration in the mass of the comet would not result in its missing the expected coincidence with the earth altogether.

Although he professed himself incompetent to pronounce a decided opinion, Lieutenant Procope manifestly inclined to the belief that no alteration would ensue in the rate of Gallia’s velocity; but Rosette, no doubt, could answer the question directly, and the time had now arrived in which he must be compelled to divulge the precise moment of collision.

But the professor was in the worst of tempers. Generally taciturn and morose, he was more than usually uncivil whenever any one ventured to speak to him. The loss of his telescope had doubtless a great deal to do with his ill-humor; but the captain drew the most favorable conclusions from Rosette’s continued irritation. Had the comet been in any way projected from its course, so as to be likely to fail in coming into contact with the earth, the professor would have been quite unable to conceal his satisfaction. But they required to know more than the general truth, and felt that they had no time to lose in getting at the exact details.

The opportunity that was wanted soon came.

On the 18th, Rosette was overheard in furious altercation with Ben Zoof. The orderly had been taunting the astronomer with the mutilation of his little comet. A fine thing, he said, to split in two like a child’s toy. It had cracked like a dry nut; and mightn’t one as well live upon an exploding bomb? — with much more to the same effect. The professor, by way of retaliation, had commenced sneering at the “prodigious” mountain of Montmartre, and the dispute was beginning to look serious when Servadac entered.

Thinking he could turn the wrangling to some good account, so as to arrive at the information he was so anxiously seeking, the captain pretended to espouse the views of his orderly; he consequently brought upon himself the full force of the professor’s wrath.

Rosette’s language became more and more violent, till Servadac, feigning to be provoked beyond endurance, cried:

“You forget, sir, that you are addressing the Governor-General of Gallia.”

“Governor-General! humbug!” roared Rosette. “Gallia is my comet!”

“I deny it,” said Servadac. “Gallia has lost its chance of getting back to the earth. Gallia has nothing to do with you. Gallia is mine; and you must submit to the government which I please to ordain.”

“And who told you that Gallia is not going back to the earth?” asked the professor, with a look of withering scorn.

“Why, isn’t her mass diminished? Isn’t she split in half? Isn’t her velocity all altered?” demanded the captain.

“And pray who told you this?” again said the professor, with a sneer.

“Everybody. Everybody knows it, of course,” replied Servadac.

“Everybody is very clever. And you always were a very clever scholar too. We remember that of old, don’t we?”

“Sir!”

“You nearly mastered the first elements of science, didn’t you?”

“Sir!”

“A credit to your class!”

“Hold your tongue, sir!” bellowed the captain again, as if his anger was uncontrollable.

“Not I,” said the professor.

“ Hold your tongue!” repeated Servadac.

“Just because the mass is altered you think the velocity is altered?”

“Hold your tongue!” cried the captain, louder than ever.

“What has mass to do with the orbit? Of how many comets do you know the mass, and yet you know their movements? Ignorance!” shouted Rosette.

“Insolence!” retorted Servadac.

Ben Zoof, really thinking that his master was angry, made a threatening movement towards the professor.

“Touch me if you dare!” screamed Rosette, drawing himself up to the fullest height his diminutive figure would allow. “You shall answer for your conduct before a court of justice!”

“Where? On Gallia?” asked the captain.

“No; on the earth.”

“The earth! Pshaw! You know we shall never get there; our velocity is changed.”

“On the earth,” repeated the professor, with decision.

“Trash!” cried Ben Zoof. “The earth will be too far off!”

“Not too far off for us to come across her orbit at 42 minutes and 35.6 seconds past two o’clock on the morning of this coming 1st of January.”

“Thanks, my dear professor — many thanks. You have given me all the information I required;” and, with a low bow and a gracious smile, the captain withdrew. The orderly made an equally polite bow, and followed his master. The professor, completely nonplussed, was left alone.

Thirteen days, then — twenty-six of the original Gallian days, fifty-two of the present — was all the time for preparation that now remained. Every preliminary arrangement was hurried on with the greatest earnestness.

There was a general eagerness to be quit of Gallia. Indifferent to the dangers that must necessarily attend a balloon ascent under such unparalleled circumstances, and heedless of Lieutenant Procope’s warning that the slightest check in their progress would result in instantaneous combustion, they all seemed to conclude that it must be the simplest thing possible to glide from one atmosphere to another, so that they were quite sanguine as to the successful issue of their enterprise. Captain Servadac made a point of showing himself quite enthusiastic in his anticipations, and to Ben Zoof the going up in a balloon was the supreme height of his ambition. The count and the lieutenant, of colder and less demonstrative temperament, alike seemed to realize the possible perils of the undertaking, but even they were determined to put a bold face upon every difficulty.

The sea had now become navigable, and three voyages were made to Gourbi Island in the steam launch, consuming the last of their little reserve of coal.

The first voyage had been made by Servadac with several of the sailors. They found the gourbi and the adjacent building quite uninjured by the severity of the winter; numbers of little rivulets inter............