"Speaking of evolution," said the engineer, one day, to Beatrice, as they stood on the black boulder-beach and watched the fishermen toss their weird freight out upon the slippery stones--"these fish here give a magnificent example of it. You see, where the use for an organ ceases, the organ itself eventually perishes. But take these creatures and put them back into the surface-ocean--" "The eyes would develop again?" she queried. "Precisely! And so with everything! Take the Folk themselves, for instance. Now that they've been living here a thousand or fifteen hundred years, away from the sunlight, all the protecting pigmentation that used to shield the human race from the actinic sun rays has gradually faded out. So they've got white hair, colorless skins, and pinkish eyes. Out in the world again, they'd gradually grow normal again. How I wish some of my old-time opponents to the evolutionary theory could stand here with me to-day in the Abyss! I bet a million I could mighty soon upset their nonsense!" Such of the fish as were not eaten in their natural state were salted down in vats hollowed in the rock, at the far end of the village. Still others were dried, strung by the gills on long cords of seaweed fiber, and hung in rows near the great flame. There were certain days for this process. At other times no fish were allowed anywhere near the fire. Why this was, Stern could not discover. Even the patriarch would not tell him. Beside the fish, several seaweeds were cooked and eaten in the form of leaves, bulbs, and roots, which some of the Folk dived for or dragged from the bottom with iron grapples. All the weeds tasted alike to Stern and Beatrice; but the old man assured them there were really great differences, and that certain of them were rare delicacies. A kind of huge, misshapen sea-turtle was the chief prize of all. Three were taken during the strangers' first fortnight in the Abyss; but the fortunate boat-crews that brought them in devoured them, refusing to share even a morsel with any other of the people. Stern and the girl were warned against tasting any weed, fish, or mussel on their own initiative. The patriarch told them certain deadly species existed--species used only in preparing venoms in which to dip the spear and lance-points of the fighting men. Beyond these foods the only others were the flesh and eggs of the highly singular birds the strangers had seen on their first entry into the village. These tasted rankly of fish, and were at first very disagreeable. But gradually the newcomers were able to tolerate them when cooked by Beatrice in as near an approximation to modern methods as she could manage.