We must see whether the same clock with weights will go faster at the top of a mountain or at the bottom of a mine; it is probable, if the pull of the weights decreases on the mountain and increases in the mine, that the earth has real attraction.
But then the girl moved, and smiled, and pulled her hand from the grate- a gorgeous green stone clutched tightly in her grasp. It was covered with dust and cobwebs, but it was uncracked and unharmed. And, of course, completely fake.