Under the balcony this extraordinary roadway ran swiftly to Graham's right, an endless flow rushing along as fast as a nineteenth century express train, an endless platform of narrow transverse overlapping slats with little interspaces that permitted it to follow the curvatures of the street. Upon it were seats, and here and there little kiosks, but they swept by too swiftly for him to see what might be therein. From this nearest and swiftest platform a series of others descended to the centre of the space. Each moved to the right, each perceptibly slower than the one above it, but the difference in pace was small enough to permit anyone to step from any platform to the one adjacent, and so walk uninterruptedly from the swiftest to the motionless middle way. Beyond this middle way was another series of endless platforms rushing with varying pace to Graham's left. And seated in crowds upon the two widest and swiftest platforms, or stepping from one to another down the steps, or swarming over the central space, was an innumerable and wonderfully diversified multitude of people.