"It seems to be an agreement," he said to Mont, who was looking over his shoulder. "An agreement about an invention, that----"

"It is my father's handwriting!" exclaimed the young man, in an unnatural voice; "I could tell it in a thousand."

Jack turned the document over.

"I guess you're right," he said. "It seems to relate to some improvement in making tools." He looked at the title. "Gracious me!"

"What is it?" cried Mont.

"It is drawn up between the Gray Brothers of the first part, and Martin Willington of the second!"

"And Martin Willington----" began the young man.

"Martin Willington was my father!" ejaculated the young machinist, in great surprise.

At that instant both heard Meg's voice calling loudly.

"Better clear out. Here comes Pooler, and that Andy Mosey is with him!"