“From time to time,” continues Mason, “vast masses of clouds covered the lower regions of the atmosphere, and spread a thick, whitish veil over the earth, intercepting our view, and leaving us for some time uncertain if this was not a continuation of the same plains covered with snow which we had already noticed. From these masses of vapour, there seemed more than once during the night to come a sound as of a great fall of water, or the contending waves of the sea; and it required all the force of our reason, joined to our knowledge—such as it was—of the direction of our route, to repress the idea that we were approaching the sea, and that, driven by the wind, we had, been carried along the coasts of the North Sea or the Baltic. As the day advanced these apprehensions disappeared. In place of the unbroken surface of the sea, we gradually made out the varied features of a cultivated country, in the midst of which flowed a majestic river, which lost itself, at both extremities, in the mist that still lay on the horizon.”
This river was the Rhine, and as the neighbourhood seemed suitable for a descent, and as the travellers did not wish to be carried too far into the heart of Europe, they allowed a portion of the gas to escape, came gradually down, and dropped their anchor.
It was then half-past seven in the morning. It was only then that the inhabitants, who had hitherto held themselves aloof, watching the movements of the strangers from under the brushwood, began to assemble from all sides. A few words in German spoken from the balloon dissipated their fears, and, recovering from their mistrust, they hastened immediately to lend assistance to the aeronauts The latter were now informed that the place they had selected for their descent was in the Duchy of Nassau. The town of Wiberg, where Blanchard had descended, after his ascent at Frankfort in 1785 was, by a singular chance, only two leagues distant. The three aeronauts received a most flattering reception, and, in memory of the event, they placed the flag which they had borne in their car during their adventurous excursion in the ducal palace, side by side with that of Blanchard.
“Thus,” says Mason, “terminated an expedition which, whether we regard the extent of the journey, the length of time occupied in it, or the results which were the objects of the experiment, may justly be considered as one of the most interesting and most important ever undertaken. The best answer which one could give to those who would be disposed to criticise the employment of the peculiar means which we made use of, or to doubt their efficiency, would be to state that, after having traversed without hindrance, without either danger or difficulty, so large a portion of the European continent, we arrived at our destination still in possession of as much force as, had we wished it, might have carried us round the whole world.”
Chapter IX. The “Geant” Balloon.
Not a few of our readers will remember the ascent of Nadar’s colossal balloon from Paris, on Sunday, the 18th of October, 1863. This balloon was remarkable as having attached to it a regular two-story house for a car. Its ascent was witnessed by nearly half a million of persons. The balloon, after passing over the eastern part of France, Belgium, and Holland, suffered a disastrous descent in Hanover the day after it started on its perilous journey. It was a fool-hardy enterprise to construct such a gigantic and unmanageable balloon, presenting such an immense surface to the atmosphere, and being so susceptible to adverse aerial currents as to become the helpless prey of the elements; and it was still more fool-hardy to place the lives of its passengers at the mercy of such terrible and ungovernable forces. A large section of the public laboured under the delusion that Nadar’s balloon was one capable of being steered. In reality, however, the ‘Geant’ was unquestionably the most rebellious and unruly specimen of its class that has been made since the days of Montgolfier. The object in view when this formidable monster was designed and constructed was to create the means to collect sufficient funds to form a “Free Association for Aerial Navigation by means of MACHINES HEAVIER THAN AIR,” and for the construction of machines on this principle. The receipts from the exhibition of the “Geant” were intended to form the first capital of the association. The hopes, however, of the promoters have not been realised in this respect; for while the expenses of the construction of the balloon have amounted, directly and indirectly, to the sum of L8,300, its two ascents in Paris and its exhibition in London produced only L3,300.
Space forbids us to enter at length on the various stages of the idea of aerial navigation by means of an apparatus heavier than the atmosphere. The idea is not, however, by any means so absurd as it appears at first sight. Those who, like Arago, declare that the word “impossible” does not exist, except in the higher mathematics, and those who look hopefully to the future instead of resting content with the past, will join in applauding the spirit which dictated the manifesto of aerial locomotion to the founder of the association which we are about to describe. M. Babinet, speaking on this subject before the French Polytechnic Association, said: “It is absurd to talk of guiding balloons. How will you set about it? How is it possible that a balloon—say, for instance, like the Flesselles, whose diameter measures 120 feet—can resist and manoeuvre against opposing winds or currents of air? It would require a power equal to 400 horses for the sails of a ship to struggle on equal terms with the wind. Suppose an impossibility, namely, that a balloon could carry with it a force equal to 400 horse-power; this result would be of little use, for under the immense weight the fragile covering of the balloon would instantly collapse. If all the horses of a regiment were harnessed to the car of a balloon by means of a long rope, the result would be that the balloon would fly into shivers, being too fragile to withstand these two opposing forces. Man must seek to raise himself in the air by another mode of operation altogether, if he wish to guide himself at the same time. Some time ago I bought a play thing, very much in vogue at that time, called a Stropheor. This toy was composed of a small rotating screw propeller, which revolved on its own support when the piece of string wound round it was pulled sharply. The screw was rather heavy, weighing nearly a quarter of a pound, and the wings were of tin, very broad and thick. This machine, however, was rather too eccentric for parlour use, for its flight was so violent that it was continually breaking the pier glass, if there was one in the room; and, failing this, it next attacked the windows. The ascending force of this machine is so great that I have seen one of them fly over Antwerp Cathedral, which is one of the highest edifices in the world. The air from underneath the machine is exhausted by the action of the screw, which, passing under the wings, causes a vacuum, while the air above it replenishes and fills this void, and under the influence of these two causes the apparatus mounts from the earth. But the problem is not solved by means of this plaything, whose motive power is exterior to it. Messrs. Nadar, Ponton, D’Amecourt, and De la Landelle teach us better than this, although the wings of their different models are entirely unworthy of men who desire to demonstrate a truth to short-lived mortals. We have only arrived as yet at the infancy of the process, but we have made a good beginning, for, having once proved that a machine capable of raising itself in the air, wholly unaided from without, can be made, we have overcome with this apparently small result the whole difficulty. The principle of propulsion by means of a screw is by no means a novelty. It was first utilised in windmills, whose sails are nothing more nor less than an immense screw which is turned by the action of the wind on its surface. In the case of turbine water-wheels, where perhaps 970 cubic feet of water are utilised by means of a mechanism not larger than a hat, we see another illustration of it, with this difference, that water takes the place of wind as the motive power.
“The aerial screw is beset with great difficulties, but if we can succeed through its agency in raising even the smallest weight, we may be confident of being able to raise a heavier one, for a large machine is always more powerful in proportion to its size than a small one.
“Mlle. Garnerin once made a bet that she would guide herself in her descent from a considerable altitude towards a fixed spot on the earth at some distance, with no other help than the parachute; and she was really able to guide herself to within a few feet of the specified spot, by simply altering the inclination of the parachute.