devices and articles as will add to one's personal comfort and welfare. It is, therefore, the aim of this book to suggest certain diversions of this character for the boy camper which, aside from affording him plenty of physical exercise, will also develop his mental faculties, and above all stimulate that natural genius which is characteristic of every typical American boy. To this end the story contains descriptions of a large collection of articles which can be made by any boy of average intelligence, not only in the camp but at home as well. The use of a narrative to connect the various incidents marks a departure in this class of book, and it is believed that the matter will thus be made more realistic and interesting. In all cases full directions are given for making the various articles. While it is not presumed that the directions will be slavishly followed, for this would defeat the general aim of the work, yet all the principal dimensions are given so that they can be used, if desired. I beg to acknowledge the courtesy of Mr. Daniel C. Beard and Mr. Henry D. Cochrane in supplying a number of photographs. The directions for making the lee boards (page 119) were obtained from data furnished by the latter. Many of the details recorded in the chapter on Tramping Outfits are to be accredited to Mr. Edward Thorpe. In the preparation of this book I have received valuable assistance from my colleague, Mr. A. A. Hopkins. A. RUSSELL BOND. New York, October, 1905. CONTENTS CHAPTER I. PAGE "BILL" 17 The Old Trunk. Christmas Vacation. "Bill's" Skate Sail. Willow Clump Island. Organizing the Society. CHAPTER II. SKATE SAILS 26 The Double Swedish Sail. The Single Swedish Sail. The Lanteen Sail. The Danish Sail. Bat's Wings. CHAPTER III. SNOW SHOES, SKIS AND SWAMP SHOES 35 Chair Seat Snow Shoe. Barrel Stave Snow Shoe. Barrel Hoop Snow Shoe. The Sioux Snow Shoe. The Iroquois Snow Shoe. The Ainu Snow Shoe. The Norwegian Ski. The Swamp Shoe or Swiss Snow Shoe. CHAPTER IV. TENT MAKING 44 Farewell Meeting. Word from Uncle Ed. The Canvas Tent. Adjustable Ridge Pole. Tie Blocks. The Annex. CHAPTER V. PREPARING FOR THE EXPEDITION 53 Tent Fly. Provisions and Supplies. Umbrella Rib Crossbow. Megaphone. The Scow. CHAPTER VI. OFF TO THE ISLAND 63 A Unique Alarm Clock. The Trip to the Island. Preliminary Exploration. A Rustic Table. The Small Filter. The Barrel Filter. The _Klepalo_. CHAPTER VII. SURVEYING 73 The Surveying Instrument. Spirit Levels. The Tripod. Surveyor's Chain. Surveyor's Rod. A Simple Method of Surveying. Mapping the Island. CHAPTER VIII. SWIMMING 84 Swimming on a Plank. Shooting the Rapids. Restoring the Drowned. How to Work over a Patient Alone. CHAPTER IX. BRIDGE BUILDING 95 The Spar Bridge. The Rope Railway. The Suspension Bridge. The Pontoon Bridge. The King Rod Truss. Stiffening the Bridge. The King Post Bridge. CHAPTER X. CANVAS CANOES 109 Uncle Ed's Departure. A Visit from Mr. Schreiner. The Sailing Canoe. Stretching on the Canvas. The Rudder. The Deep Keel. Canoe Sails. Lee Boards. Indian Paddling Canoe. CHAPTER XI. HOUSE BUILDING 124 The Grass Hut. The Goblins' Dancing Platform. Dutchy Takes a Dare. A Path Up the Fissure. Rope Ladders. The Derrick. The Tree House. Sliding Doors. CHAPTER XII. TROUBLE WITH THE TRAMPS 138 The Scow is Stolen. A Council of War. Vengeance. A Double Surprise. Tramp-proof Boat Mooring. CHAPTER XIII. WIGWAGGING AND HELIOGRAPHING 144 Wigwag Signals. The Wigwag Alphabet. Abbreviations. Wigwagging at Night. The Heliograph. The Single Mirror Instrument. The Sight Rod. The Screen. Focusing the Instrument. Heliograph Signaling. The International...