Harry watched this device critically, and at length said he didn’t like it.
“Well, I do, then,” Philip answered. “Wouldn’t I like one to use every morning, though?”
STATUE OF BENJAMIN FRANKLIN AT THE MAIN ENTRANCE OF THE ELECTRICITY BUILDING.
“I mean that the principle isn’t right,” Harry insisted. “That inventor is making the man twist around so as to apply his foot to the brush. He ought to make an electric brush that can be held in the hand and put against the boot. Don’t you think so, Mr. Douglass?”
“Your argument seems reasonable,” said the tutor; “but it’s often wise to remember that the inventors have thought more about these problems than we have; so it is not likely they have overlooked the most evident criticisms. Still, in this case I think Harry is right.”
MODEL OF A LAKE SUPERIOR COPPER-MINE: MINING BUILDING.
At another place in the gallery there was an electric door, and people were invited by placards to walk through it. It had a handle like other doors, but no one ever touched it; for no sooner did one approach than the door opened politely, closing after the person was upon the other side.
One man—“who thought he was smart,” Philip said—walked up to the door as if he meant to pass through the doorway, and then halted. The door remained open so long as the man stood before it, and closed when he turned away.