He hardly finished his lunch, so eager was he to be back at the problem. Johnny did not come until after two o'clock, and then stood his hands in his pockets, surveying his absorbed partner with some disgust.
"Well," said he, "is the old thing working yet?"
Bobby looked up absorbedly.
"She's going to in just a second—you wait," he muttered.
A moment later he lifted the locked form in triumph. It held together and it was flat. Immediately Johnny's nearly extinct enthusiasm flamed up.
"Stick her in!" he cried. "Come on, we can show Papa a sample to-night. How many an hour do you suppose we can print on her, Bobby?"
"I don't know," replied Bobby.
They inserted the form, slipped a blank envelope in the corner and were ready for the first trial.
"It won't be even on the paper," said Bobby, "but we can fix that later."
He pulled down and back the long lever and the two heads bumped together over the result. One side of the legend was very heavy and black and clear, but the other was almost invisible.