"You may ask," Darmstetter went on--though I had not thought of asking--"if t'e beauty vould be hereditable; if as an acquired characteristic, it vould pass to descendants, or, if each child vill not haf to be treated anew. I believe no. It is true t'at acquired traits are not hereditable. T'ere Weissmann is right, v'atefer doubters may say. You know t'e t'eory. T'e blacksmit's muscles are not transmitted to his son t'e clerk; but t'e black hair t'at he got from his fat'er. Only after fery many generations of blacksmit's could a boy be born who vould grow up as a clerk vit' blacksmit' muscles. Efolution shapes t'e vorld, yes; but t'e process is so slow, so slow! So education, modification, must begin afresh vit' each generation and continue forefer. But t'is bacillus does not add ornament to t'e outside. It is not like t'e masseuse, vit' her unguents and kneading. It changes all t'e nature. It is like compressing a million years of education by natural selection into von lifetime. T'at is my t'eory. I do not know--it is not yet tried--but how ot'ervise? Ve but hasten t'e process, as t'e chemist hastens fermentation; Nature constructs, she does not adapt or alter or modify. Ve produce beauty by Nature's own met'od. V'y not hereditary?" I had made up my mind. "I'll do it," I cried, no longer able to resist, for the fever of it was in my blood. "You shall make your attempt on me! It can do no harm. I do not see how it can accomplish all you claim, but if you think--it's an experiment full of possibilities--in the interests of science--" "Interest of humbug!" snapped Prof. Darmstetter, his own sarcastic self again. "You consent because you vant to be beautiful. You care not'ing for science. I can trust you vit' my secret. You need svear no oat's not to reveal it. You vant to be t'e only perfect voman in t'e vorld, and so you shall be, for some time. T'at is right. T'at is your revard." My cheeks flushed at his injustice. I do care for others. I am not selfish--not more than everybody. And yet--at that moment I feared him and his knowledge; I shuddered at nameless terrors. Really, I often wonder that I ever had the courage to try. And oh, I am so glad! Now there is no more fear. Darmstetter is my servant, if I will it. As for his marvellous power, I shall bless it and reverence it all my life. I thank God for letting me know this man. It is too wonderful--too wonderful for words! The transformation was slow at first. The beginning--such an anxious time. Every day I studied myself and watched and waited for the first sign of growing grace, for the dawning glory. Sometimes I thought I could see the change already under way, and then again the same plain Nelly Winship looked at me from the uncomplimentary glass, and away flew all my hopes.