"Wanted to write an article on it, he said."
"And you seem to have believed him?"
"At the time, or I wouldn't have sold him the goods."
"What made you believe him?"
The witness paused, puzzled and shifted from foot to foot.
"Well, I can't say, sir, as to his credentials."
"Couldn't he have procured these materials in some less public way if secrecy had been an object with him?"
"Plenty of other ways of getting such things, sir."
"Yet he walked in openly to your office?"
"Yes, sir."