Frank walked out briskly upon the stage.
"You will see, ladies and gentlemen," he said, "that I have had this mirror placed in a position where the light falls strongly upon it, and I think you will be able to follow the movements of the fly from any part of the house. First, I wish to show you the mirror."
He then took the mirror down from the easel, and, having shown both sides to the audience, rested it on the floor, leaning it against the easel.
Next he took the glass from the frame and showed that to the audience.
"It is just an ordinary mirror, as you can all see," he said.
Having shown the glass, he rested that against the easel, and took up the frame, which had a wooden back, and showed that to the audience. Then the frame was placed on the easel in its proper position, while the glass still leaned against the bottom part, which it covered up as far as the lower edge of the frame.
As it stood thus, Frank talked glibly a few moments, then he picked up the glass and returned it carefully to the frame.
"Now," he said, taking a piece of soap, "I am going to divide this mirror into twenty-eight even squares."
He proceeded to do so.
"Next," explained Merry, "I will number twenty-six of those squares in order as they come, like this."