The day of the ascent was that of the great September fair, which attracts so many people to Frankfort. Lighting gas, of a perfect quality and of great lifting power, had been furnished to me in excellent condition, and about eleven o’clock the balloon was filled; but only three-quarters filled,—an indispensable precaution, for, as one rises, the atmosphere diminishes in density, and the fluid enclosed within the balloon, acquiring more elasticity, might burst its sides. My calculations had furnished me with exactly the quantity of gas necessary to carry up my companions and myself. We were to start at noon. The impatient crowd which pressed around the enclosed space, filling the enclosed square, overflowing into the contiguous streets, and covering the houses from the ground-floor to the slated gables, presented a striking scene. The high winds of the preceding days had subsided. An oppressive heat fell from the cloudless sky. Scarcely a breath animated the atmosphere. In such weather, one might descend again upon the very spot whence he had risen. I carried three hundred pounds of ballast in bags; the car, quite round, four feet in diameter, was comfortably arranged; the hempen cords which supported it stretched symmetrically over the upper hemisphere of the balloon; the compass was in place, the barometer suspended in the circle which united the supporting cords, and the anchor carefully put in order. All was now ready for the ascent. Among those who pressed around the enclosure, I remarked a young man with a pale face and agitated features. The sight of him impressed me. He was an eager spectator of my ascents, whom I had already met in several German cities. With an uneasy air, he closely watched the curious machine, as it lay motionless a few feet above the ground; and he remained silent among those about him. Twelve o’clock came. The moment had arrived, but my travelling companions did not appear. I sent to their houses, and learnt that one had left for Hamburg, another for Vienna, and the third for London. Their courage had failed them at the moment of undertaking one of those excursions which, thanks to the ability of living aeronauts, are free from all danger. As they formed, in some sort, a part of the programme of the day, the fear had seized them that they might be forced to execute it faithfully, and they had fled far from the scene at the instant when the balloon was being filled. Their courage was evidently the inverse ratio of their speed—in decamping.