“Doubtless I should find your companionship very instructive.”

“You are kind to say so.”

“I don’t say so. I only say that from your account of yourself I should presume so. Of course I know of you only from your own statements. So you were a professor at Harvard University?”

“Yes, sir.”

“During what years?”

“I left there a year since, after serving for a term of five years.”

“That was a long period. Why did you leave, may I ask?”

“On account of my health. I labored so assiduously that it became seriously affected. My physician prescribed traveling for a year or more. My means are not large, partly because I have spent so much money on books and scientific research, and our salaries as professors were not munificent.”

“You have a large library?”

“About four hundred volumes,” answered Puffer promptly. “I think those books—many of them rare—must have cost over ten thousand dollars.”