If we consider the shape, structure, appurtenances, and capabilities of a ship of early ages, and one of the present time, we must be struck with admiration at the great improvement that has been made, and the advantages that have been obtained; but balloons are very nearly what they were from the first, and are as much at the mercy of the wind for the direction they will take. Neither is there at present any certain prospect of an alteration in this condition. Their so-called "voyage" is little more than "drifting," and can be no more, except by certain manoeuvres which obtain precarious exceptions, such as rising to take the chance of different currents, or lowering a long and weighty rope upon the earth (an ingenious invention of Mr. Green's, called the "guide rope"), to be trailed along the ground. If, however, man is ever to be a flying animal, and to travel in the air whither he listeth, it must be by other means than wings, balloons, paddle-machines, and aerial ships--several of which are now building in America, in Paris, and in London. We do not doubt the mechanical genius of inventors--but the motive power. We will offer a few remarks on these projects before we conclude. But let us, at all events, ascend into the sky! Taking balloons as they are, "for better, for worse," as Mr. Green would say--let us for once have a flight in the air. The first thing you naturally expect is some extraordinary sensation in springing high up into the air, which takes away your breath for a time. But no such matter occurs. The extraordinary thing is, that you experience no sensation at all, so far as motion is concerned. So true is this, that on one occasion, when Mr. Green wished to rise a little above a dense crowd, in order to get out of the extreme heat and pressure that surrounded his balloon, those who held the ropes, misunderstanding his direction, let go entirely, and the balloon instantly rose, while the aeronaut remained calmly seated, wiping his forehead with a handkerchief, after the exertions he had undergone in preparing for the flight, and totally unconscious of what had happened. He declares that he only became aware of the circumstance, when, on reaching a considerable elevation (a few seconds are often quite enough for that), he heard the shouts of the multitude becoming fainter and fainter, which caused him to start up, and look over the edge of the car.