“Perhaps,” replied Wood, doubtfully.

“Thames was always your favourite,” observed Jack, as he fastened another piece of wood on the teeth of the iron stopper.

“I've made no distinction between you, hitherto,” answered Wood; “nor shall I do so, unless I'm compelled.”

“I've had the hard work to do, at all events,” rejoined Jack, “But I won't complain. I'd do anything for Thames Darrell.”

“And Thames Darrell would do anything for you, Jack,” replied a blithe voice. “What's the matter, father!” continued the new-comer, addressing Wood. “Has Jack displeased you? If so, overlook his fault this once. I'm sure he'll do his best to content you. Won't you, Jack?”

“That I will,” answered Sheppard, eagerly.

“When it thunders, the thief becomes honest,” muttered Wood.

“Can I help you, Jack?” asked Thames, taking up a plane.

“No, no, let him alone,” interposed Wood. “He has undertaken to finish this job by six o'clock, and I wish to see whether he'll be as good as his word.”

“He'll have hard work to do it by that time, father,” remonstrated Thames; “you'd better let me help him.”