Where the desert breaks in waves of shifting sand against the southern range, where the streams run southwards and lose themselves,—there and not on the seaboard of France and Spain would seem to lie the destined boundaries of Europe; this the proper limit of European enterprises. The sea is to-day less than ever a barrier, _dissociabilis_; it is rather a link. The Mediterranean may lash itself in rage, but its rage is impotent to check the progress of the great steamers. The southern frontier of the Roman Empire is once more the southern frontier of Europe. The burning sands of the great Sahara are the true divide. Yet French enterprise is loth to admit this. The indomitable spirit of adventure, of adventure however profitless,—the spirit which led their Crusaders to the Holy Land, the army of Napoleon to Moscow, and Marchand on his interminable desert march to anticipate Kitchener at Fashoda,— this spirit is still at work. Further into the Sahara the outposts are continually being pushed; a railway is projected to Timbuctoo, now a journey of three months for caravans; and the connection of the French Colonies in North and West Africa has long been mooted. We may admire this spirit and its manifestation, but in all deference may ask, Is it business? At the time of the French invasion, eighty years ago, there was not a single road in the interior of Algeria. The Roman roads had disappeared. The Arab paths only permitted the passage of horsemen, and wheeled vehicles were unknown. In the Tell transport was by mules, in the south by caravans. The army no sooner landed than it began to lay out roads, and for some time afterwards their construction was in the hands of the military engineers. They are now in the care of a special department. The system which has been evolved consists of a great artery running east and west from the frontier of Tunis to the frontier of Morocco, united by branch roads to the chief ports on the coast, and sending forth great feelers southward to the Sahara. These are the great national trunk roads constructed and maintained by the state for strategic purposes, and they have a total length of about 2500 miles. Besides these, the state has assisted in the making of a great number of roads partly strategic, but for the most part designed to open up new regions to colonization. These, with the ordinary country roads, make up a total of nearly 10,000 miles.