What a delightful world, where one could lunch off a ray of sunshine! Is it a dream, or the anticipation of a remote reality?
The problem is one of the most important that science can set us.

Let us first hear the evidence of the young Lycosae regarding its possibilities.
For seven months, without any material nourishment, they expend strength in moving.

To wind up the mechanism of their muscles, they recruit themselves direct with heat and light.

During the time when she was dragging the bag of eggs behind her, the mother, at the best moments of the day, came and held up her pill to the sun.

With her two hind-legs she lifted it out of the ground into the full light; slowly she turned it and turned it, so that every side might receive its share of the vivifying rays.