I PAUL AND BOB II THE BROTHERS' INVENTION III THE SUCCESSFUL MODEL IV PLANNING A BIG AIRPLANE V AN AIR RACE FINISH AND A CHALLENGE VI THE MISSING BLUE-PRINTS VII WHO'S AT THE WINDOW? VIII THE SKY-BIRD II IX THE TEST FLIGHT X FINAL PREPARATIONS XI OFF FOR PANAMA XII FIGHTING A DEVIL-FISH XIII THE STRANGE AIRPLANE XIV A FAMILIAR FACE XV THE START XVI TRICKED BY RIVALS XVII ACROSS THE ATLANTIC XVIII AN IRRITATING DELAY XIX SAVED BY THE SEARCHLIGHT XX A JUNGLE ADVENTURE XXI THE DOUBLE LOOP XXII ABOVE THE CLOUDS XXIII BOMBED BY ROCKS XXIV RIDING AN AIRPLANE'S TAIL XXV ENGULFED IN A VOLCANO'S DUST XXVI IN AUSTRALIA XXVII PAUL VERSUS PETE XXVIII A MIX-UP IN DATES XXIX A FLYING RESCUE XXX AN ALARMING DISCOVERY XXXI THE FINISH Around the World in Ten Days CHAPTER I PAUL AND BOB "Did you say this big Air Derby around the world takes place this coming summer, Bob?" "So dad told me at the breakfast table this morning, Paul. The plans have just been completed. He said full details would be in to-day's papers." "And the afternoon edition is out now, for there's a newsie just ahead of us who is calling out the _Daily Independent_. That's your father's newspaper, too." "It will be in there sure pop, Paul." "Then I'm going to get a copy right now." The two youths, who but a few moments before had come out of the broad doors of the Clark Polytechnic Institute along with a noisy throng of other students, paused when they reached the newsboy in question, and the taller of the pair bought a newspaper which he shoved into an inner pocket of his raincoat. "We'll look at this in the car on our way home; a fellow can't do any reading in a storm like this," said the purchaser. "Let's hurry up a bit, Bob; I'm so eager to see what it says about that Derby that I can hardly wait to get to the station. Say, just think of it--a race around the world by air! Won't that be great?" "I'll say so, Paul old boy! They ought to smash all existing records. You know that a man named Mears made the circuit in thirty-five days about seven years ago, and he had to depend on slow steam trains and steamships, aided by a naphtha-launch." "That's true, Bob. Now that we have planes we ought to do a lot better. But the big oceans are the trouble for aircraft. The Atlantic has been crossed by Alcock and Brown in a Vimy-Vickers biplane, and also by our NC-4 flying-boat under the command of Lieutenant Read, and by the big English dirigible R-34; but the Pacific, with its greater breadth, has seemed so impossible that it has never been attempted." "Why should it seem impossible?" "Because they can't carry sufficient gasoline to cross the Pacific." "But how about the islands?"