CHAPTER XI. FACT AND FANCY. "Have you ever seen the Moon?" said a teacher ironically one day in class to one of his pupils. "No, sir;" was the pert reply; "but I think I can safely say I've heard it spoken about." Though saying what he considered a smart thing, the pupil was probably perfectly right. Like the immense majority of his fellow beings, he had looked at the Moon, heard her talked of, written poetry about her, but, in the strict sense of the term, he had probably never seen her—that is—scanned her, examined her, surveyed her, inspected her,