We find in the first place that it is separated from Canada by only the width of a river. So we are not surprised to hear that Detroit is one of the principal points for the exchange of goods between the two countries. The two most important Canadian railroads have terminals at Windsor, on the Canadian side of the water, and also at Detroit. A very large part of the United States finds Detroit the most convenient point from which to send its products into Canada, since goods can so easily be brought to Detroit by water or rail. Statistics issued by the United States government show that of the eighteen customhouses on the Canadian border the one at Detroit does the largest volume of business. Then too, by the lakes, Detroit can reach all of the American lake ports, and from Buffalo, through the Erie Canal, it can even reach New York. The many railroads which serve Detroit give it excellent communication with all parts of the United States. The Michigan Central Railroad dives under the river, from Detroit to Windsor, through one of the most remarkable tunnels in the world. For years the cars of the Michigan Central Railroad, both passenger and freight, were carried across the river on ferryboats. This, of course, was a very slow way of crossing, but a bridge was impractical for various reasons, so at last it was decided to build a tunnel. When the engineers studied the river bottom, they found that it was covered with mud so deep that it was impossible to build a tunnel under it. Instead they built the tunnel of steel on the river bank, and when it was completed they sank it in sections and then fastened it together. Two belt-line railroads, extending from the river bank, circle through Detroit. One is some two miles from the center, the other, six. Along these railroads are many factories which have switches directly into their plants. This makes shipping a simple matter for the Detroit manufacturers. Now, having learned something of the history of Detroit, something of the manufacturing which it does and the commerce it carries on, let us take a look at the city itself. [Illustration: THE CITY OF DETROIT] The older parts of most great cities are badly laid out. In very few cases do men realize that their little settlements are to grow into large cities. And so they pay little attention to laying out streets, but in building their houses follow the farm lanes and often the paths made by the cows as they are driven to and from the pastures. This is not always the case however. Washington was laid out long before it ever became a city, and, in consequence, it has magnificent broad streets and many parks. [Illustration: NORTH WOODWARD AVENUE]