“Oh, it takes a long while to complete negotiations,” Mrs. Leonard replied. “The professor is expecting an officer here tomorrow to witness another demonstration.”
“Where is the machine kept? In your house?”
“Oh, dear no! The professor has it in a little shack down by the lake. You can see the place from here.”
Mrs. Leonard led the girls a short distance from the summer house, pointing through the trees to a knoll at the edge of Blue Hole Lake.
“The professor and his wife went down there a few minutes ago,” she revealed. “Why don’t you ask them to show you the invention? They might do it.”
“I doubt if we have time.”
“Oh, let’s take time,” Louise urged. “It sounds so interesting, Penny.”
Thus urged, Penny agreed, and with her chum, walked down the hill toward the lake.
“It sounds fishy to me,” she declared skeptically. “Probably this professor is just a crack-pot who thinks he has a wonderful invention, but hasn’t.”
“Mrs. Leonard said she saw a successful demonstration.”