“It will make your fortune.”

“I hope so,” he said dreamily, “For others’ sake more than mine.”

“Yes,” I cried; “and then you could have a nice place and a carriage for Mrs Hallett, and it would make her so much happier.”

“Yes,” he said, with a sigh.

“And you could be a gentleman again.”

He started, and a curious look came over his face; but it passed away directly, and I saw him shake his head before turning to me with a smile.

“Antony,” he said quietly, “suppose we build the machine, the castles in the air will build themselves. I tell you what; you shall work sometimes and help me to plan; but, as a rule, while I file and grind you shall read some Latin or German author, and you and I can improve ourselves as we go.”

“Agreed!” I cried, and then the rest of the night was spent—a very short night, by the way—in examining the various parts of the little model, Hallett seeming to give himself fresh ideas for improvements as he explained the reason for each wheel and spindle, and told me of the difficulties he had to contend with for want of proper tools and the engineer’s skill.

“I want a lathe, Antony,” he said; “and a good lathe costs many pounds, so I have to botch and patch, and buy clock-wheels and file them down. It takes me a whole evening sometimes wandering about Clerkenwell or the New Cut hunting for what I want.”