"Yes, sir," said John; "we have been devoting every spare moment to them.  Of course a good many changes had to be made to adapt conditions from the little airplane to the big fellow, and to incorporate the extra pet features we all agreed upon were desirable.  You know it never pays to start building an important and costly affair like an airplane without having every detail thoroughly planned out, and perfect working drawings in hand.  I think Paul will complete the drawings early next week, including copies for accompanying the specifications when we apply to Washington for patent rights.  As soon as the drawings are done, we will drop in at your home in the evening and show them to you."