Every boy should have this book. It's a practical book--it gets right next to the boy's heart and stays there. He will have it near him all the time, and on every page there is a lesson or something that will stand the boy in good need. Beyond a doubt in its line this is one of the cleverest books on the market.--_Providence News._ If a boy has any sort of a mechanical turn of mind, his parents should see that he has this book.--_Boston Journal._ This is a book that will do boys good.--_Buffalo Express._ The boy who will not find this book a mine of joy and profit must be queerly constituted.--_Pittsburgh Gazette._ Will be a delight to the boy mechanic.--_Watchman, Boston._ An admirable book to give a boy.--_Newark News._ This book is the best yet offered for its large number of practical and profitable ideas.--_Milwaukee Free Press._ Parents ought to know of this book.--_New York Globe._ For sale by all booksellers or sent postpaid on receipt of price by the publishers. LOTHROP, LEE & SHEPARD CO., BOSTON Transcriber's Note: The following typographical errors present in the original print edition have been corrected in this electronic version. In Chapter I, "I broke for the the ravine" was changed to "I broke for the ravine". An illustration caption has been changed from "In the Home of the Kodiac Bear" to "In the Home of the Kodiak Bear". In Chapter II, "through the standstone to some other rock" was changed to "through the sandstone to some other rock". In the illustration captioned "A Tangle of Swamp", a missing period was added after "U.S.G.S". In Chapter III, "had been been a little over his knees" was changed to "had been a little over his knees", and "safely esconced among the branches" was changed to "safely ensconced among the branches". In Chapter V, a missing quotation mark was added before "You bet!", and an extraneous quotation mark was removed following "built up somewhere else in some other way." In Chapter VI, "lie of of the land" was changed to "lie of the land". In Chapter VIII, an extraneous quotation mark was removed after "They tote every drop." In the illustration captioned "Bridged by Double Tree", "U.S.G.A." was changed to "U.S.G.S.". In Chapter IX, a missing quotation mark was added after "Mr. Masseth's." In Chapter XI, "the sting of a black hornet?" was changed to "the sting of a black hornet.". In Chapter XVIII, a missing question mark was added after "cows here to do all the work". In addition, an advertisement for other books in the U. S. Service Series has been moved from the front of the book to the back.