She seemed unconscious of the deafening hum which resounded echoingly all around her. Her eyes were fixed glassily ahead. She stumbled unseeingly, but rose and came on, her arm still outstretched before her as though it were pulling her forward. She did not even see the peril ahead of her. Right in her path glimmered an acid pool, giving off its slow, vaporous mist. She came slowly but directly towards the pool, seemingly drawn by it. Her steps came nearer and nearer, yet still she did not look down, or appear aware of it. Then a light shone from a near-by crag and the fore-quarters of one of the huge shiny creatures inhabiting this place reared its shape against the sky. Its luminous eyes glared downward and abruptly it raised a glistening foreclaw. Barbara was now at the brink of the pool. It seemed certain that her next pace or so would carry her into its unseen depths. It shone sullen and still, seeming harmless except for the faint acid fumes drifting up from its murky surface. She made as if to step forward, then halted abruptly.