One pushed through a white gate and found oneself in a grass court, small but well kept, with roses growing in the hedges and grapes hanging from the walls. But what, in the name of wonder, were those objects in the middle of the grass plot? Through the dusk of an autumn evening there shone out an enormous white globe. Round it at various distances were others of different sizes--the planets and their satellites, it seemed. But who could have placed them there, and why?