"Isidor Werner, you believe yourself rich; but your wealth is like molasses in a sieve. If you do not dip in your finger and taste the sweet occasionally, you will have nothing to show for your pains in the end. I shall ask you for but a taste of the sweet now, so that I may preserve a little of it against that day which may come, when the sieve will be bright and clean and empty again!" There was a knock at the door. "Come in!" I shouted. "Nothing but this lunch can save me from your eloquence. You have already ruined me in three similes!" The waiter arranged a bountiful and tempting luncheon on a writing table. I commenced on it at once, but the doctor, though repeatedly urged, persistently refused. He took a long draught at a _stein_ of Munich beer, and continued:-- "My invention proposes to navigate the air and the ether beyond, as well as the interplanetary spaces," he said impressively. "Flying machine, eh?" I sneered, between bites of planked whitefish. "Indeed no!" he growled, as if he detested this name. "My invention is not a machine but a projectile. It is not self-propelling, because if it depended upon its own propelling apparatus, it could not in thousands of years navigate the interplanetary spaces. It is a _gravity projectile_, and will travel at a rate of speed almost incalculable. It does not fly, but its manner of travelling is more nearly like falling." I gave the doctor a quick searching look to see if I could discover any signs of incipient insanity. I met a firm, steady gaze; an earnest, convincing look. Somehow, I felt there was something real and true and wonderful about to come from the great scholar before me, and that I must hear it and hear it all; that I must lend a serious and thoughtful attention. My eyes were rivetted upon the doctor's for fully a minute in silence. "Go on," I said at last; "I am all attention." CHAPTER II The Gravity Projectile Hermann Anderwelt had probably suffered many disappointments and waited long for a hearing. Now he seemed to feel that his opportunity had come, for he continued with growing enthusiasm:-- "Hitherto all attempts at space travelling have been too timid or puerile. We have experimented at aerial navigation, as if the brief span of air were a step in the mighty distance which separates us from our sister planets. As well might steamboats have been invented to cross narrow streams, and never have ventured on the mighty ocean! We have tried to imitate the bird, the kite, and the balloon, and our experiments have failed, and always must, so long as we do not look farther and think deeper. Every Icarus who attempts to overcome the force of gravity, which conquers planets, and propel himself through the air by any sort of apparatus, will always finish the trip with a wiser but badly bruised head." "Still, it has been freely predicted," I ventured, "that this century will not close without the invention of a successful air-travelling machine."