"Yet all he said at first was, 'Will you do something for me?' I told him, 'Surely,' and as we carried Mary in, he told me the rest. He wanted me to be the mother of Mary's child." Jack stared at her blankly. Mrs. Kesserich nodded. "He wanted to remove an ovum from Mary's body and nurture it in mine, so that Mary, in a way, could live on." "But that's impossible!" Jack objected. "The technique is being tried now on cattle, I know, so that a prize heifer can have several calves a year, all nurtured in 'scrub heifers,' as they're called. But no one's ever dreamed of trying it on human beings!" Mrs. Kesserich looked at him contemptuously. "Martin had mastered the technique twenty years ago. He was willing to take the chance. And so was I—partly because he fired my scientific imagination and reverence, but mostly because he said he would marry me. He barred the doors. We worked swiftly. As far as anyone was concerned, Martin, in a wild fit of grief, had locked himself up for several hours to mourn over the body of his fiancee. "Within a month we were married, and I finally gave birth to the child." Jack shook his head. "You gave birth to your own child." She smiled bitterly. "No, it was Mary's. Martin did not keep his whole bargain with me—I was nothing more than his 'scrub wife' in every way." "You think you gave birth to Mary's child." Mrs. Kesserich turned on Jack in anger. "I've been wounded by him, day in and day out, for years, but I've never failed to recognize his genius. Besides, you've seen the girl, haven't you?" Jack had to nod. What confounded him most was that, granting the near-impossible physiological feat Mrs. Kesserich had described, the girl should look so much like the mother. Mothers and daughters don't look that much alike; only identical twins did. With a thrill of fear, he remembered Kesserich's casual words: "... parthenogenesis ... pure stock ... special techniques...." "Very well," he forced himself to say, "granting that the child was Mary's and Martin's—" "No! Mary's alone!" Jack suppressed a shudder. He continued quickly, "What became of the child?" Mrs.