It was now all-important to learn whether the astronomer had been able to continue his observations, and whether he had learned sufficient of Gallia"s path through s.p.a.ce to make him competent to determine, at least approximately, the period of its revolution round the sun. With as much tact and caution as he could, Lieutenant Procope endeavored to intimate the general desire for some information on this point.
"Before the shock, sir," answered the professor, "I had conclusively demonstrated the path of the comet; but, in consequence of the modifications which that shock has entailed upon my comet"s...o...b..t, I have been compelled entirely to recommence my calculations."
The lieutenant looked disappointed.
"Although the orbit of the earth was unaltered," continued the professor, "the result of the collision was the projection of the comet into a new orbit altogether."
"And may I ask," said Procope, deferentially, "whether you have got the elements of the fresh orbit?"
"Yes."
"Then perhaps you know--"
"I know this, sir, that at 47 minutes 35.6 seconds after two o"clock on the morning of the 1st of January last, Gallia, in pa.s.sing its ascending node, came in contact with the earth; that on the 10th of January it crossed the orbit of Venus; that it reached its perihelion on the 15th; that it re-crossed the orbit of Venus; that on the 1st of February it pa.s.sed its descending node; on the 13th crossed the orbit of Mars; entered the zone of the telescopic planets on the 10th of March, and, attracting Nerina, carried it off as a satellite."
Servadac interposed:
"We are already acquainted with well-nigh all these extraordinary facts; many of them, moreover, we have learned from doc.u.ments which we have picked up, and which, although unsigned, we cannot entertain a doubt have originated with you."
Professor Rosette drew himself up proudly and said: "Of course, they originated with me. I sent them off by hundreds. From whom else could they come?"
"From no one but yourself, certainly," rejoined the count, with grave politeness.
Hitherto the conversation had thrown no light upon the future movements of Gallia, and Rosette was disposed apparently to evade, or at least to postpone, the subject. When, therefore, Lieutenant Procope was about to press his inquiries in a more categorical form, Servadac, thinking it advisable not prematurely to press the little _savant_ too far, interrupted him by asking the professor how he accounted for the earth having suffered so little from such a formidable concussion.
"I account for it in this way," answered Rosette: "the earth was traveling at the rate of 28,000 leagues an hour, and Gallia at the rate of 57,000 leagues an hour, therefore the result was the same as though a train rushing along at a speed of about 86,000 leagues an hour had suddenly encountered some obstacle. The nucleus of the comet, being excessively hard, has done exactly what a ball would do fired with that velocity close to a pane of gla.s.s. It has crossed the earth without cracking it."
"It is possible you may be right," said Servadac, thoughtfully.
"Right! of course I am right!" replied the snappish professor. Soon, however, recovering his equanimity, he continued: "It is fortunate that the earth was only touched obliquely; if the comet had impinged perpendicularly, it must have plowed its way deep below the surface, and the disasters it might have caused are beyond reckoning. Perhaps,"
he added, with a smile, "even Montmartre might not have survived the calamity."
"Sir!" shouted Ben Zoof, quite unable to bear the unprovoked attack.
"Quiet, Ben Zoof!" said Servadac sternly.
Fortunately for the sake of peace, Isaac Hakkabut, who at length was beginning to realize something of the true condition of things, came forward at this moment, and in a voice trembling with eagerness, implored the professor to tell him when they would all be back again upon the earth.
"Are you in a great hurry?" asked the professor coolly.
The Jew was about to speak again, when Captain Servadac interposed: "Allow me to say that, in somewhat more scientific terms, I was about to ask you the same question. Did I not understand you to say that, as the consequence of the collision, the character of the comet"s...o...b..t has been changed?"
"You did, sir."
"Did you imply that the orbit has ceased to be a parabola?"
"Just so."
"Is it then an hyperbola? and are we to be carried on far and away into remote distance, and never, never to return?"
"I did not say an hyperbola."
"And is it not?"
"It is not."
"Then it must be an ellipse?"
"Yes."
"And does its plane coincide with the plane of the earth?"
"Yes."
"Then it must be a periodic comet?"
"It is."
Servadac involuntarily raised a ringing shout of joy that echoed again along the gallery.
"Yes," continued the professor, "Gallia is a periodic comet, and allowing for the perturbations to which it is liable from the attraction of Mars and Jupiter and Saturn, it will return to the earth again in two years precisely."
"You mean that in two years after the first shock, Gallia will meet the earth at the same point as they met before?" said Lieutenant Procope.
"I am afraid so," said Rosette.
"Why afraid?"
"Because we are doing exceedingly well as we are." The professor stamped his foot upon the ground, by way of emphasis, and added, "If I had my will, Gallia should never return to the earth again!"
CHAPTER IV. A REVISED CALENDAR
All previous hypotheses, then, were now forgotten in the presence of the one great fact that Gallia was a comet and gravitating through remote solar regions. Captain Servadac became aware that the huge disc that had been looming through the clouds after the shock was the form of the retreating earth, to the proximity of which the one high tide they had experienced was also to be attributed.
As to the fulfillment of the professor"s prediction of an ultimate return to the terrestrial sphere, that was a point on which it must be owned that the captain, after the first flush of his excitement was over, was not without many misgivings.
The next day or two were spent in providing for the accommodation of the new comer. Fortunately his desires were very moderate; he seemed to live among the stars, and as long as he was well provided with coffee, he cared little for luxuries, and paid little or no regard to the ingenuity with which all the internal arrangements of Nina"s Hive had been devised. Anxious to show all proper respect to his former tutor, Servadac proposed to leave the most comfortable apartment of the place at his disposal; but the professor resolutely declined to occupy it, saying that what he required was a small chamber, no matter how small, provided that it was elevated and secluded, which he could use as an observatory and where he might prosecute his studies without disturbance. A general search was inst.i.tuted, and before long they were lucky enough to find, about a hundred feet above the central grotto, a small recess or reduct hollowed, as it were, in the mountain side, which would exactly answer their purpose. It contained room enough for a bed, a table, an arm-chair, a chest of drawers, and, what was of still more consequence, for the indispensable telescope. One small stream of lava, an off-shoot of the great torrent, sufficed to warm the apartment enough.
In these retired quarters the astronomer took up his abode. It was on all hands acknowledged to be advisable to let him go on entirely in his own way. His meals were taken to him at stated intervals; he slept but little; carried on his calculations by day, his observations by night, and very rarely made his appearance amongst the rest of the little community.
The cold now became very intense, the thermometer registering 30 degrees F. below zero. The mercury, however, never exhibited any of those fluctuations that are ever and again to be observed in variable climates, but continued slowly and steadily to fall, and in all probability would continue to do so until it reached the normal temperature of the regions of outlying s.p.a.ce.
This steady sinking of the mercury was accompanied by a complete stillness of the atmosphere; the very air seemed to be congealed; no particle of it stirred; from zenith to horizon there was never a cloud; neither were there any of the damp mists or dry fogs which so often extend over the polar regions of the earth; the sky was always clear; the sun shone by day and the stars by night without causing any perceptible difference in the temperature.
These peculiar conditions rendered the cold endurable even in the open air. The cause of so many of the diseases that prove fatal to Arctic explorers resides in the cutting winds, unwholesome fogs, or terrible snow drifts, which, by drying up, relaxing, or otherwise affecting the lungs, make them incapable of fulfilling their proper functions. But during periods of calm weather, when the air has been absolutely still, many polar navigators, well-clothed and properly fed, have been known to withstand a temperature when the thermometer has fallen to 60 degrees below zero. It was the experience of Parry upon Melville Island, of Kane beyond lat.i.tude 81 degrees north, and of Hall and the crew of the _Polaris_, that, however intense the cold, in the absence of the wind they could always brave its rigor.