At midnight of this same day only three things existed in the world--on my table I turned from the _Bhagavad-Gita_ to Drinkwater's _Reverie_ and back again; then I looked up to the jar of clear water and watched Guinevere hovering motionless. At six the next morning she was crouched safely on a bit of paper a foot from the aquarium. She had missed the open window, the four-foot drop to the floor, and a neighboring aquarium stocked with voracious fish: surely the gods of pollywogs were kind to me. The great fins were gone--dissolved into blobs of dull pink; the tail was a mere stub, the feet drawn close, and a glance at her head showed that Guinevere had become a frog almost within an hour. Three things I hastened to observe: the pupils of her eyes were vertical, revealing her genus _Phyllomedusa_ (making apt our choice of the feminine); by a gentle urging I saw that the first and second toes were equal in length; and a glance at her little humped back showed a scattering of white calcareous spots, giving the clue to her specific personality--_bicolor_: thus were we introduced to _Phyllomedusa bicolor_, alias Guinevere, and thus was established beyond doubt her close relationship to Gawain. During that first day, within three hours, during most of which I watched her closely, Guinevere's change in color was beyond belief. For an hour she leaped from time to time; but after that, and for the rest of her life, she crept in strange unfroglike fashion, raised high on all four limbs, with her stubby tail curled upward, and reaching out one weird limb after another. If one's hand approached within a foot, she saw it and stretched forth appealing, skinny fingers. At two o'clock she was clad in a general cinnamon buff; then a shade of glaucous green began to creep over head and upper eyelids, onward over her face, finally coloring body and limbs. Beneath, the little pollyfrog fairly glowed with bright apricot orange, throat and tail amparo purple, mouth green, and sides rich pale blue. To this maze of color we must add a strange, new expression, born of the prominent eyes, together with the line of the mouth extending straight back with a final jeering, upward lift; in front, the lower lip thick and protruding, which, with the slanting eyes, gave a leering, devilish smirk, while her set, stiff, exact posture compelled a vivid thought of the sphinx. Never have I seen such a remarkable combination. It fascinated us. We looked at Guinevere, and then at the tadpoles swimming quietly in their tank, and evolution in its wildest conceptions appeared a tame truism.