"The three of you together?" Tanza asked.
"Not exactly together. I have been playing the part of eavesdropper. It isn't a pleasant recreation, but 'needs must when the devil drives.' Nor was my occupation without meet reward, because the discourse was a most interesting one. Try to guess what they were talking about!"
The Italian's eyes twinkled brightly.
"You must give me a lead or two first," he said. "You must tell me whether I am hot or cold, as the children used to do in the game we played when I was a boy. In the first place, did they meet by appointment, and did the meeting take place in a public-house? On consideration, I am sure it took place in a public-house."
"Right," Grey smiled. "An old-fashioned public-house, with the bar divided into compartments, where one can listen comfortably. Bark was waiting for his victim, who came more or less unwillingly; in fact, I don't think he would have come at all, except that he was desperately hard up and in urgent need of liquid refreshment. He appeared to be on the verge of an attack of delirium tremens, but was in possession of his faculties. And now I think I have told you enough. You may be able to guess what they were talking about."
Once more Tanza's eyes twinkled brilliantly.
"Well, perhaps they were discussing Arnold Rent," he ventured. "I don't suppose his name was mentioned, but no doubt he was the chief topic of conversation."
"You are getting warm," Grey laughed. "Go on."
"You encourage me to proceed," the Italian said. "Of course, Bark wanted information. Like the child in the story, he wanted to see the works of the watch. He was very desirous to know exactly how certain things were brought about. I suppose he wanted the very latest information on the subject of electricity."
"Wonderful man!" Grey murmured. "You have hit it exactly. That is precisely what he did want. Not that he got much information out of Swift. On the whole, I should say that Bark found him very disappointing. It appears that some time ago Arnold Rent began a series of experiments in electricity——"