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CONTENTS
CHAPTER PAGE I An Appeal, for Aid................................................................................................................................................................................................................................................................................................................................................................................................1 II Explanations................................................................................................................................................................................................................................................................................................................................................................................................10 III A Face at the Window................................................................................................................................................................................................................................................................................................................................................................................................19 IV Tom's Experiments................................................................................................................................................................................................................................................................................................................................................................................................27 V Mary's Present................................................................................................................................................................................................................................................................................................................................................................................................38 VI Mr. Nestor's Letter................................................................................................................................................................................................................................................................................................................................................................................................46 VII Off for Peru................................................................................................................................................................................................................................................................................................................................................................................................55 VIII The Bearded Man................................................................................................................................................................................................................................................................................................................................................................................................64 IX The Bomb................................................................................................................................................................................................................................................................................................................................................................................................73 X Professor Bumper................................................................................................................................................................................................................................................................................................................................................................................................81 XI In the Andes................................................................................................................................................................................................................................................................................................................................................................................................88 XII The Tunnel................................................................................................................................................................................................................................................................................................................................................................................................98 XIII Tom's Explosive................................................................................................................................................................................................................................................................................................................................................................................................107 XIV Mysterious Disappearances................................................................................................................................................................................................................................................................................................................................................................................................116 XV Frightened Indians................................................................................................................................................................................................................................................................................................................................................................................................128 XVI On the Watch................................................................................................................................................................................................................................................................................................................................................................................................134 XVII The Condor................................................................................................................................................................................................................................................................................................................................................................................................142 XVIII The Indian Strike................................................................................................................................................................................................................................................................................................................................................................................................153 XIX A Woman Tell's................................................................................................................................................................................................................................................................................................................................................................................................161 XX Despair................................................................................................................................................................................................................................................................................................................................................................................................168
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