XVIII This subway station with its electric lights, pillars of steel, arches of cement, and trains— quite an improvement on the caves of the cave-men; but, look! on this wall a primitive drawing. XIX Subway People moving, people standing still, crowds and more crowds; a thousand and ten thousand iron girders as pillars; escape! But how, shut up in the moving train? And upstairs, in the street, the sun is shining as it shines in June.