Dan found opportunity to regard the girl more closely. Her eyes, when she looked at him, seemed normal. But at other times he saw that her pupils became suddenly abnormally large; or again, contracted to pin points, even in the dimness of indoors. At once, a dark veil--a film--seemed to creep over the eyeball; but she became aware of the scrutiny, and it was gone before Dan could make sure. Her ears, in outward shape a trifle rounder than ours, were generally hidden--pink shells in the waving mass of her white hair. Dan fancied that they moved at her will--that sometimes they expanded. Her fingers, and her toes, were long, slim and tapering, with pink-white, pointed nails. The joints were more numerous than with us; it gave them a prehensile aspect; and Dan fancied, too, that the arch of the bottom of her foot was cup-shaped as though it might serve as a vacuum for walking upon inclined surfaces. Father had told Dan that Zetta probably was from Xenephrene. But no one could be sure. An idea occurred to Dan, and a few days later, just before dawn, he and Hulda tried it. Xenephrene, on clear days, was visible just before sunrise. The weather, here in Porto Rico now, was generally below freezing. Once it had snowed. The Cains' fruit groves were killed; but with all the world's catastrophe for comparison, Dan and his father thought little of it. The Porto Rican day now was but two hours long. The sun made a low arc in the south, descending within two hours, not very much to the west of where it had risen. * * * * * It was mid morning when in the darkness before dawn, Hulda and Dan with Zetta stood outside the plantation house. To the south Xenephrene would soon rise. "Do you think she'll recognize it?" Hulda asked. Dan smiled; how could one guess? Zetta stood between them, puzzled, looking first at one, then the other. She had walked out with them quietly. She always walked quietly, carefully, as though trying to imitate their own slow steps. And though Dan, with gestures, had often tried to make her leap into the air, she never would. It was cold, this mid morning before dawn; Dan and Hulda were dressed in heavy, northern garments. Zetta wore the filmy robe in which they had first seen her. She seemed to prefer her own garments, a number of which had been brought from the vehicle, and installed with her at the Cains'. To the cold she was utterly oblivious; the cold of outdoors, or the warmth inside--she seemed not aware of the difference. They stood on the knoll. The sky to the southward was brightening. The stars there moved in a low arc. Then Xenephrene came up. Blazing, purple-white star. "Look!" said Dan. "Zetta, look! We call that Xenephrene. Can't you understand me? Do you recognize that star? Your world? Did you come from there?"