Jim stepped back to the controls with a white face, and slowly we moved closer to the mass. As we approached I thought that I could detect a fleeting passage of expression in those huge eyes. Then they disappeared and only a huge crimson and purple blob lay before us. Jim moved the controls again and the flyer came to a stop. Two long streamers moved out from the mass. Suddenly there was a jerk to the ship which threw us both to the floor. It started upward at express train speed. Jim staggered to his feet, grasped the controls and started all four bow motors at full capacity, but even this enormous force had not the slightest effect in diminishing our speed. "Well, the thing's got us, whatever it is," said Jim as he pulled his controls to neutral, shutting off all power. Now that the danger had assumed a tangible form, he appeared as cool and collected as ever, to my surprise, I found that I had recovered control of my muscle and of my voice. I became aware that the shoulder which Jim had gripped was aching badly, and I rubbed it absently. "What is it, Jim?" I asked for the third time. "I don't know," he replied. "It is some horrible inhabitant of space, something unknown to us on earth. From its appearance and actions, I think it must be a huge single-celled animal of the type of the earthly amoeba. If an amoeba is that large here, what must an elephant look like? However, I expect that we'll learn more about the matter later because it's taking us with it, wherever it's going." * * * * * Suddenly the flyer became dark inside. I looked at the nearest window, but I could not even detect its outline. I reached for the light switch, but a sudden change in direction threw me against the wall. There was an instant of intense heat in the flyer. "We have passed the heaviside layer," said Jim. "The brute has changed direction, and we felt that heat when he took us through the infra-red wall." I reached again for the light switch, but before I could find it our motion ceased and an instant later the flyer was filled with glaring sunlight. We both turned to the window.