Now, being such a narrow island, none of its cross streets can be very long, as was pointed out, even at the city's greatest breadth. The highest cross-street number I ever found was 742 East Twelfth. But these down-town cross streets are much shorter, even those that succeed in getting all the way across without stopping; they are so abruptly short that each little street has to change in the greatest possible hurry from block to block, like vaudeville performers, in order to show all the features of a self-respecting cross street in the business section. Hence the sudden contrasts. For instance, down at one end of a certain well-known business street may be seen some low houses of sturdy red brick, beginning to look antique now with their solid walls and visible roofs. They line an open, sunny spot, with the smell of spices and coffee in the air. A market was situated here over a hundred years ago, and this broad, open space still has the atmosphere of a marketplace. The sights and smells of the water-front are here, too, ships and stevedores unloading them, sailors lounging before dingy drinking-places, and across the cobble-stones is a ferry-house, with "truck" wagons on the way back to Long Island waiting for the gates to open, the unmistakable country mud, so different from city mire, still sticking in cakes to the spokes, notwithstanding the night spent in town. Nothing worth remarking, perhaps, in all this, but that the name of the street is Wall Street, and all this seems so different from the Wall Street of a stone's-throw inland, with crowded walks, dapper business men, creased trousers, tall, steel buildings, express elevators, messengers dashing in and out, tickers busy, and all the hum and suppressed excitement of the Wall Street the world knows, as different and as suddenly different as the change that is felt in the very air upon stepping across through the noise and shabby rush of lower Sixth Avenue into the enchanted peace of Greenwich village, with sparrows chirping in the wistaria vines that cover old-fashioned balconies on streets slanting at unexpected angles. [Illustration: A Cross Street at Madison Square.] [Illustration: Across Twenty-fourth Street--Madison Square when the Dewey Arch was there.] The typical part of these down-town cross streets is, of course, that latter part, the section more or less near Broadway, and crowded to suffocation with great businesses in great buildings, commonly known as hideous American sky-scrapers. This is the real down-town to most of the men who are down there, and who are too busy thinking about what these streets mean to each of them to-day to bother much with what the streets were in the past, or even to notice how the modern tangle of spars and rigging looks as seen down at the end of the street from the office window.