While the Alsatian diluted his glass of aqua fortis, shook into it an infusion of bitters, and tossed off the bumper with apparent relish, I had time to look around the strange apartment.

The four corners of the room were occupied respectively by a turning-lathe, a Rhumkorff coil, a small steam-engine, and an orrery in stately motion. Tables, shelves, chairs, and floor supported an odd aggregation of tools, retorts, chemicals, gas-receivers, philosophical instruments, boots, flasks, paper-collar boxes, books diminutive, and books of preposterous size. There were plaster busts of Aristotle, Archimedes, and Compte, while a great drowsy owl was blinking away, perched on the benign brow of Martin Farquhar Tupper. “He always roosts there when he proposes to slumber,” explained my tutor. “You are a bird of no ordinary mind. Schlafen Sie wohl.

Through a closet door, half open, I could see a human-like form covered with a sheet. Rivarol caught my glance.

“That,” said he, “will be my masterpiece. It is a microcosm, an android, as yet only partly complete. And why not? Albertus Magnus constructed an image perfect to talk metaphysics and confute the schools. So did Sylvester II; so did Robertus Greathead. Roger Bacon made a brazen head that held discourses. But the first named of these came to destruction. Thomas Aquinas got wrathful at some of its syllogisms and smashed its head. The idea is reasonable enough. Mental action will yet be reduced to laws as definite as those which govern the physical. Why should not I accomplish a manikin which will preach as original discourses as the Rev. Dr. Allchin, or talk poetry as mechanically as Paul Anapest? My android can already work problems in vulgar fractions and compose sonnets. I hope to teach it the Positive philosophy.”

Out of the bewildering confusion of his effects Rivarol produced two pipes, and filled them. He handed one to me.

“And here,” he said, “I live and am tolerably comfortable. When my coat wears out at the elbows, I seek the tailor and am measured for another. When I am hungry, I promenade myself to the butcher’s and bring home a pound or so of steak, which I cook very nicely in three seconds by this oxy-hydrogen flame. Thirsty, perhaps, I send for a carboy of aqua fortis. But I have it charged, all charged. My spirit is above any small pecuniary transaction. I loathe your dirty greenbacks and never handle what they call scrip.”

“But are you never pestered with bills?” I asked. “Don’t the creditors worry your life out?”

“Creditors!” gasped Rivarol. “I have learned no such word in your very admirable language. He who will allow his soul to be vexed by creditors is a relic of an imperfect civilization. Of what use is science if it cannot avail a man who has accounts current? Listen. The moment you or any one else enters the outside door this little electric bell sounds me warning. Every successive step on Mrs. Grimler’s staircase is a spy and informer vigilant for my benefit. The first step is trod upon. That trusty first step immediately telegraphs your weight. Nothing could be simpler. It is exactly like any platform scale. The weight is registered up here upon this dial. The second step records the size of my visitor’s feet. The third his height, the fourth his complexion, and so on. By the time he reaches the top of the first flight I have a pretty accurate description of him right here at my elbow, and quite a margin of time for deliberation and action. Do you follow me? It is plain enough. Only the A B C of my science.”

EDWARD P. MITCHELL