A few minutes later, in the coffee-room of the hotel, Hollis led Hetherwick up to a bearded and spectacled man who had just sat down to lunch, and having introduced him, briefly detailed the object of his visit to Sellithwaite. Collison nodded and smiled.
"I understand," he said, as they seated themselves at his table. "Hannaford did dabble a bit in chemistry—in quite an amateur way. But as to inventing anything that was worth all that—come! Still, he was an ingenious man, for an amateur, and he may have hit on something fairly valuable."
"You've no idea what he was after?" suggested Hetherwick.
"Of late, no! But some time ago he was immensely interested in aniline dyes," replied Collison. "He used to talk to me about them. That's a subject of infinite importance in this district. Of course, as I dare say you know, the Germans have been vastly ahead of us as regards aniline dyes, and we've got most, if not all, of the stuff used, from Germany. Hannaford used to worry himself as to why we couldn't make our own aniline dyes, and I believe he experimented. But, with his resources, as an amateur, of course, that was hopeless."
"I've sometimes seen him talking to you," observed Hollis. "You've no idea what he was after, of late?"
"No. He used to ask me technical questions," answered Collison. "You know, I just regarded him as a man who had a natural taste for experimenting with things. This was evidently his hobby. I used to chaff him about it. Still, he was a purposeful man, and by reading and experiment he'd picked up a lot of knowledge."
"And, I suppose, it's within the bounds of possibility that he had hit on something of practical value?" suggested Hetherwick.
"Oh, quite within such bounds!—and he may have done," agreed Collison. "I've known of much greater amateurs suddenly discovering something. The question then is—do they know enough to turn their discovery to any practical purpose and account?"
"Evidently, from what he told his granddaughter, Hannaford did think he knew enough," said Hetherwick. "What I want to find out from a visit to his old laboratory is—what had he discovered?"
"And as you're not a chemist, nor even a dabbler," remarked Hollis, with a laugh, "that won't be easy! You'd better come with us after lunch, Collison."