what positions of the earth the moon is visible at certain hours and days, and by means of what we call our compound reflectors, we can cast a shadow of any message we like on it. Operators in other parts of the world are constantly observing it also, and take a series of photographs every second of the shadows that we throw, so that observers in various parts of the world are transmitting and receiving news every clear night; these photographs are an exact record of all that goes on all over the world, and this record is made common property, the moon taking the place of a big sign board that all nations see and read at will."
I ventured to ask, "Was the moon inhabited?" "Oh, dear no!" he said, "that has been disproved beyond all doubt. It is completely covered with a white material like snow; but I tell you what we have proved beyond a doubt, that all the planets are inhabited. We find that the inhabitants of many planets have noticed our reflections as cast on the moon, and we have also noticed theirs. We have a com-
