Title -- Contents -- Chapter I - The Departure of the Overland Limited -- Chapter II - Ned's Meeting with Major Baldwin Honeywell -- Chapter III - The Relation of Miguel Vasquez -- Chapter IV - The Contract, and Liquid Hydrogen -- Chapter V - A Dinner Party on the Placida -- Chapter VI - Bob Russell of the Kansas City Comet -- Chapter VII - The Making of a Newspaper Story -- Chapter VIII - The Hospitality of New Mexico -- Chapter IX - "Californy Kid" Gets a Job -- Chapter X - An Error in Calculation -- Chapter XI - A Disguise Penetrated -- Chapter XII - Ned to Bob Russell's Rescue -- Chapter XIII - Quick Justice in the West -- Chapter XIV - Building an Air Ship -- Chapter XV - How Jack Jellup Lost an Arm -- Chapter XVI - Ready to "Let Go All" -- Chapter XVII - An Interrupted Flight -- Chapter XVIII - Free and Afloat at Last -- Chapter XIX - The First Flight -- Chapter XX - Fighting Indians with a Searchlight -- Chapter XXI - A Cordite Bomb and its Work -- Chapter XXII - A Thrilling Rescue in Mid-Air -- Chater XXIII - Camp Eagle in the Mountains -- Chapter XXIV - A Grave in the Desert -- Chapter XXV - Bartering Stores a Mile in the Air -- Chapter XXVI - The Secret Tunnel in the Mesa -- Chapter XXVII - The Turquoise Temple Discovered -- Chapter XXVIII - The Collapse of the Cibola -- Chapter XXIX - The Golden Eagle of the Aztecs -- Chapter XXX - A Quarter of a Ton of Treasure -- Chapter XXXI - An Adventure with the Navajos -- Chapter XXXII - Alan Succumbs to Exhaustion -- Chapter XXXIII - A Forlorn Dash for Help -- Chapter XXXIV - The Rescue.