Contents

I. A Letter from Bob[ 9]
II. Willie Cannot Help It[ 19]
III. Cranny’s Plan[ 32]
IV. The Ramblers Arrive[ 40]
V. Preparations[ 54]
VI. Border City Once More[ 64]
VII. At the Ranch[ 79]
VIII. At Lone Pine[ 91]
IX. In the Air[ 104]
X. Bob Takes a Flight[ 124]
XI. The Dirigible[ 136]
XII. “He’s a Puzzle”[ 147]
XIII. Willie Shows His Nerve[ 159]
XIV. Milling the Herd[ 172]
XV. The Underground Passage [ 180]
XVI. The Astonishing William[ 192]
XVII. The Two in the Sky[ 209]
XVIII. The Rescue Party[ 219]
XIX. The Eagle[ 232]
XX. Over the Mountains[ 241]
XXI. Adrift[ 250]
XXII. Prisoners[ 270]
XXIII. By Moonlight[ 281]
XXIV. To the Rescue[ 291]
XXV. The Visitors[ 308]