At last, one vacation time, he paid a long deferred visit to a friend, a Selenologist, at Gröningen, the University of the Kingdom of Hanover. Whilst smoking, drinking beer, and talking over the craters and luminous streaks in the moon, with his friend, who was also a professor, that gentleman drew his pipe from his mouth, blew a long spiral from between his lips, and then said slowly, "By the way, professor, are you aware that we have here, in this kingdom, not, indeed, in Gröningen, but in the town of Hanover, a lady, the wife of the Herr Councillor Witte, who is, like yourself, devoted to the moon; a lady, who spends entire nights on the roof of her house peering at the face of the moon through one end--the smaller--of her telescope, observing all the prominences, measuring their altitudes, and sounding all the cavities. Indeed, it is asserted that she studies the face and changes of the moon much more closely than the features and moods of her husband. Also, it is asserted, that when the moon is shining, the household duties are neglected, the dinners are bad, the maids--" "O dinners! maids! you need not consider them; there are always dinners and maids," said the Dorpat astronomer contemptuously, "but the moon is seen so comparatively rarely. The moon must be made much of when she shows. Everything must then be sacrificed to her." Dr. Maedler did not call the moon _she_, but _he_; however, we are writing in English, not in German, so we change the gender. The Astronomer Royal of the University of Gröningen went on, without noticing the interruption: "Frau von Witte has spent a good deal of her husband's money in getting the largest procurable telescope, and has built an observatory for it with a dome that revolves on cannon balls, on the top of her house. Whilst Herr von Witte slumbers and snores beneath, like a Philistine, his enlightened lady is aloft, studying the moon. The Frau Councilloress has done more than observe Luna, she has done more than you and Beer together, with your maps--she has modelled it." "Modelled it!--modelled the moon!--in what?" "In white wax." Professor Maedler's countenance fell. He had gained great renown, not in Germany only, but throughout Europe by his maps of the moon. Here was an unknown lady, as enthusiastic a devotee to the satellite as himself, who had surpassed him. "You see," continued the Hanoverian professor, "the idea is superb, the undertaking colossal. You have a fixed strong light, you make the wax moon to revolve on its axis, and you reproduce in the most surprising and exact manner, all the phases of the moon itself." This was indeed an idea. Maedler looked at his hands, his fingers. Would they be capable of modelling such a globe? Hardly, he had very broad coarse hands, and thick flat fingers, like paddles. He suddenly stood up. "What is the matter? Whither are you going?" asked his friend.