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motive to me!" he cried. "I love you as unselfishly as ever a woman was loved."

"No, I was wrong. It was a foolish speech," said she, moving her chair a little back, and tapping her stethoscope upon her knee. "Forget that I ever said it. I am so sorry to cause you any disappointment, and I appreciate most highly the honour which you do me, but what you ask is quite impossible."

With another woman he might have urged the point, but his instincts told him that it was quite useless with this one. Her tone of voice was conclusive. He said nothing, but leaned back in his chair a stricken man.

"I am so sorry," she said again. "If I had known what was passing in your mind I should have told you earlier that I intended to devote my life entirely to science. There are many women with a capacity for marriage, but few with a taste for biology. I will remain true to my own line, then. I came down here while waiting for an opening in the Paris Physiological Laboratory. I have just heard that there is a vacancy for me there, and so you will be troubled no more by my intrusion upon your practice. I have done you an injustice just as you did me one. I thought you narrow and pedantic, with no good quality. I have learned during your