XXI XXII XXIII XXIV XXV XXVI XXVII XXVIII XXIX XXX XXXI XXXII XXXIII XXXIV XXXV XXXVI THE LOST MINE OF THE AMAZON CHAPTER I A RIDDLE A RIDDLE Hal lay rigid in his deck chair and watched from under half-closed lids. The dapper little man came toward them soundlessly and approached Denis Keen’s chair with all the slinking agility of a cat. Suddenly his hand darted down toward the sleeping man’s pocket.