Prologue: "Mr. Quinn is too fearful"

Part I: Members and nonmembers. Up on the mountain ; Down in the valley ; How to make a lake ; "No danger from our enterprise" ; Rain

Part II: When the dam broke. Tap-tap-tap ; A monster unchained ; Cauldron ; The night of the Johnstown Flood ; Alone in the world

Part III: Justice and charity. Some convulsion ; Poor, lone woman ; Frozen with fear ; Strict liability

Epilogue: Song and story.