“No. Not certain. But fairly sure.”

Suddenly Bob’s face lightened, and he turned to Mr. Lewis.

“Do you know where this man lives? The one who wanted to buy the specimens from you, I mean.”

“Why—yes,” Mr. Lewis faltered. “That is, I have it in my memorandum. What do you want with it?”

“Don’t know that it’ll be any good at all. But we could inquire of his neighbors what kind of man he is.”

“Good idea. Better let me go, though.”

Bob shook his head.

“Joe and I haven’t anything else to do,” he argued, “and we’ll be glad to do it.”

“All right. Come in the house and I’ll put his name and address on paper.”