The Earth moves round the Sun from west to east in a year, and turns on its axis in a day; thus moving at the rate of 68,000 miles an hour in its orbit, and rolling around at the tolerably rapid rate of 1,040 miles per hour. As our readers may have seen that when a man is galloping a horse violently over a smooth road, if the horse from viciousness or other cause suddenly stops, the man keeps on at the same rate over the animal's head; so we, supposing the Earth to be suddenly arrested on its axis, men, women, children, horses, cattle and sheep, donkeys, editors and members of Congress, with all our goods and chattels, would be thrown off into the air at a speed of 173 miles a minute, every mother's son of us describing the arc of a parabola, which is probably the only description we should ever be able to give of the affair. This catastrophe, to one sufficiently collected to enjoy it, would, doubtless, be exceedingly amusing; but as there would probably be no time for laughing, we pray that it may not occur until after our demise; when, should it take place, our monument will probably accompany the movement. It is a singular fact that if a man travel round the Earth in an eastwardly direction he will find, on returning to the place of departure, he has gained one whole day; the reverse of this proposition being true also, it follows that the Yankees who are constantly traveling to the West do not live as long by a day or two as they would if they had stayed at home; and supposing each Yankee's time to be worth $1.50 per day, it may be easily shown that a considerable amount of money is annually lost by their roving dispositions. Science is yet but in its infancy; with its growth, new discoveries of an astounding nature will doubtless be made, among which, probably, will be some method by which the course of the Earth may be altered and it be steered with the same ease and regularity through space and among the stars as a steamboat is now directed through the water. It will be a very interesting spectacle to see the Earth "rounding to," with her head to the air, off Jupiter, while the Moon is sent off laden with mails and passengers for that planet, to bring back the return mails and a large party of rowdy Jupiterians going to attend a grand prize fight in the ring of Saturn. Well, Christopher Columbus would have been just as much astonished at a revelation of the steamboat and the locomotive engine as we should be to witness the above performance, which our intelligent posterity during the ensuing year A.D. 2000 will possibly look upon as a very ordinary and common-place affair. Only three days ago we asked a medium where Sir John Franklin was at that time; to which he replied, he was cruising about (officers and crew all well) on the interior of the Earth, to which he had obtained entrance through SYMMES HOLE!