All boys who love to be on the go will welcome the Speedwell boys. They are clean cut and loyal lads. [Illustration: Book: THE SPEEDWELL BOYS ON MOTOR CYCLES] THE SPEEDWELL BOYS ON MOTOR CYCLES _or The Mystery of a Great Conflagration_ The lads were poor, but they did a rich man a great service and he presented them with their motor cycles. What a great fire led to is exceedingly well told. THE SPEEDWELL BOYS AND THEIR RACING AUTO _or A Run for the Golden Cup_ A tale of automobiling and of intense rivalry on the road. There was an endurance run and the boys entered the contest. On the run they rounded up some men who were wanted by the law. THE SPEEDWELL BOYS AND THEIR POWER LAUNCH _or To the Rescue of the Castaways_ Here is an unusual story. There was a wreck, and the lads, in their power launch, set out to the rescue. A vivid picture of a great storm adds to the interest of the tale. THE SPEEDWELL BOYS IN A SUBMARINE _or The Lost Treasure of Rocky Cove_ An old sailor knows of a treasure lost under water because of a cliff falling into the sea. The boys get a chance to go out in a submarine and they make a hunt for the treasure. THE SPEEDWELL BOYS AND THEIR ICE RACER _or The Perils of a Great Blizzard_ The boys had an idea for a new sort of iceboat, to be run by combined wind and motor power. How they built the craft, and what fine times they had on board of it, is well related. CUPPLES & LEON CO., Publishers, NEW YORK Transcriber’s Notes Italicized text is surrounded by underscores: _italics_. Bold text is surrounded by asterisks: *bold*. Small capitals are changed to all capitals. Illustrations have been moved so they do not break up the paragraphs. Obvious typographical errors and punctuation errors have been corrected after careful comparison with other occurrences within the text and consultation of external sources. Punctuation and capitalisation for figures and glossary has been made consistent silently. Otherwise, except for those changes noted below, all misspellings in the text, and inconsistent or archaic usage, have been retained. The following corrections have been applied to the text (before/after): (CONTENTS) ... Race-ways. ... ... Race ways. ... (p. 6) ... he used Heros steam ... ... he used Hero’s steam ... (p. 43) ... is shown in Fig. 25, in ... ... is shown in Fig. 26, in ... (p. 53) ... disagreeable characteristics of a differential ... ... disagreeable characteristic of a differential ... (p. 201) ... when the mechainsm fails ... ... when the mechanism fails ... (p. 201) ... knowledge of electricty. ... knowledge of electricity. (p. 203) ... some proggress has been ... ... some progress has been ...