“He flushed nervously.
“‘I—oh, nothing,’ he answered, and drew away from me.
“Then, as if with swift determination, he reached forward and lifted the book I had laid on the seat. It was a treatise of Von Hartmann’s in German.
“‘I had judged that you were a physician,’ he said, ‘a student, perhaps, from a German university?’
“‘I am.’
“He paused for an instant, and then spoke in absent-minded reiteration, ‘So you don’t go on to London?’
“‘No,’ I returned, impatiently. ‘Can I do anything for you?’
“He handed me the book, regarding me resolutely as he did so.
“‘Are you a sensible man?’
“I bowed.