In touching the earth, the balloon happened to strike against the tomb of the Emperor Nero, and, owing to the concussion, a portion of the crown was left upon this ancient monument. The Italian journals, which were not so strictly under the supervision of the government as were the journals of France, gave the full particulars of these minor events; and certain of them, connecting the names of Nero and Napoleon, indulged in malicious remarks at the expense of the French emperor. These facts came to the ear of the great general, who manifested much indignation, dismissed the innocent Garnerin from his post, and appointed Madame Blanchard to the supervision of all the balloon ascents which took place at the public fetes. The balloon was preserved in the vaults of the Vatican in Rome, accompanied with an inscription narrating its travels and wonderful descent--minus the circumstance of the tomb. It was removed, as might be supposed, in 1814. From this time the ascents of balloons took place for the most part only on the occasions of coronations and other great public fetes. Chapter VIII. Green’s Great Journey Across Europe. It is probable that at the origin of navigation, man, before he had invented oars and sails, made use of trunks of trees upon which he trusted himself, leaving the rest to the winds and the currents of the water, whether these were known or unknown. There is some analogy between such rude rafts, the first discovered means of navigation on water, and balloons, the first discovered means of navigation in air. But unquestionably the advantage is with the latter. No means have yet been found of directly steering balloons, but by allowing the gas to escape the aeronaut can descend at will, and by lightening his car of part of the ballast he carries he can ascend as readily. It must also be remembered that the currents of air vary in their directions, according to their elevation, and were the aeronaut perfectly acquainted with aerial currents, he might, by raising or lowering himself, find a wind blowing in the direction in which he wished to proceed, and the last problem of aerostation would be solved. That any such knowledge can ever be acquired it is impossible to say; but this much may with safety be advanced, that distant journeys may frequently be taken with balloons for useful purposes.