“The first time at my laboratory, about eleven o’clock.”

“You saw him again that day, then?”

“Yes. We met by accident at a little before two P.M. on Twenty-third Street. I was surprised, because he had told me he had to catch a noon train and return to his work.”

“Then he hadn’t done so?”

“Yes. He explained that he had, but that he had been sent back to buy some supplies.”

“You believe he was telling the truth?”

“In an extensive experience with young men I have never known a more truthful one than he.”

“Between the first day of his coming back to New York and the last, had you seen him?”

“I had talked with him over the telephone. He called up two or three times to say that he was well and working hard and that he hoped to be back in a few weeks.”

“Where did he call up from?”