"Lead me to it," said Jimmy, and the two boys went downstairs.

"Say, that's a pippin," said Jimmy, as Bob switched on the light and he caught sight of the finished tuner. "I couldn't have done it better myself. You've certainly made a first class job of it."

"We thought it wasn't so bad," admitted Bob modestly. "Especially when one stops to think that you weren't here to give us the benefit of your advice."

"That's the most surprising thing about it," said Jimmy. "But now that I'm here to-night, why, we can go right ahead and get a lot done. Seems to me it must be about time for Joe and Herb to show up."

As though in answer to this thought, they heard a tuneful duet, and a moment later came a vigorous ring on the doorbell.

"You go up and let them in, will you, Doughnuts?" said Bob. "I want to melt this paraffine and get things started right away."

"Sure I will!" And Jimmy hastened off, returning a few minutes later with the missing members of the quartette.

"It's about time you got here," said Jimmy. "Bob and I were wondering if we'd have to do all the work by our lonesome, as usual."

"Gee, you don't know what work means," returned Joe scornfully. "Last evening you pretty near wore a hole in that old couch resting on it, and this afternoon you were enjoying yourself, helping your father instead of coming here and doing a little honest work for a change."

"Oh, yes, I enjoyed myself a lot!" exclaimed Jimmy. "I sawed enough one inch planks this afternoon to make either one of you loafers cry for help! And then you talk about my having enjoyed myself!"