To-day the sewer is clean, cold, straight, correct. It almost realizes the ideal of what is understood in England by the word "respectable." It is proper and grayish; laid out by rule and line; one might almost say as though it came out of a bandbox. It resembles a tradesman who has become a councillor of state. One can almost see distinctly there. The mire there comports itself with decency. At first, one might readily mistake it for one of those subterranean corridors, which were so common in former days, and so useful in flights of monarchs and princes, in those good old times, "when the people loved their kings." The present sewer is a beautiful sewer; the pure style reigns there; the classical rectilinear alexandrine which, driven out of poetry, appears to have taken refuge in architecture, seems mingled with all the stones of that long, dark and whitish vault; each outlet is an arcade; the Rue de Rivoli serves as pattern even in the sewer. However, if the geometrical line is in place anywhere, it is certainly in the drainage trench of a great city. There, everything should be subordinated to the shortest road. The sewer has, nowadays, assumed a certain official aspect. The very police reports, of which it sometimes forms the subject, no longer are wanting in respect towards it. The words which characterize it in administrative language are sonorous and dignified. What used to be called a gut is now cal............