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 upon his face, but he moved with the brisk activity of a man who had not yet bade good-bye to his youth.

"I'm in luck's way," he cried. "I wanted to see you."

"Then come back into the library," said the Professor; "you must stay and have lunch with us."

The two men entered the hall, and the Professor led the way into his private sanctum. He motioned his companion into an arm-chair.

"I trust that you have been successful, O'Brien," said he. "I should be loath to exercise any undue pressure upon my sister Ada; but I have given her to understand that there is no one whom I should prefer for a brother-in-law to my most brilliant scholar, the author of Some Remarks upon the Bile-Pigments, with special reference to Urobilin."

"You are very kind, Professor Grey--you have always been very kind," said the other. "I approached Miss Grey upon the subject; she did not say No."

"She said Yes, then?"

"No; she proposed to leave the matter open until my return from Edinburgh. I go to-day, as you know, and I hope to commence my research to-morrow."