Of monopolies in other forms of internal transportation, but little need be said. Our once busy canals and great rivers seem destined, with the constant rapid improvement and cheapening in the carriage of goods by rail, to lose all their former importance. The monopolies small and great that once held sway there have all vanished before their strong rival, the railway. The use of steam in the vessels that navigate the ocean has had an effect very similar to the replacing of stage-coaches and freight wagons by the locomotive. Where hundreds of sailing vessels plied their slow and uncertain trade, steamer lines now make trips only less regular than the railway itself. The only cause for the existence of a monopoly in ocean traffic by steam is the greatly increased capital required for a rival steamship line as compared with that needed for the old sailing vessels. We find this, the requirement of a large capital, to be a feature of more or less importance in nearly every monopoly of the present day. In this case, however, unless there is an artificial monopoly in the shape of government aid or authorization, the strength of its capital is the only power the monopoly has. We may reach a clear idea of the essential nature of all the monopolies considered in this chapter by considering an especial class of monopolies of communication, namely, mountain passes, bridges, and ship canals. If a person or a railway corporation could secure sole control of the only pass through a high mountain range separating two wealthy and populous districts producing goods of different sorts, they might exact a princely yearly revenue for its use, equal to the interest on the capital required to secure an equally favorable passage by tunnelling, or the annual cost of sending goods over some longer and more expensive route. But under the law no private person would be allowed to do this; and if the pass were a very important and necessary one, probably no one railway company would be allowed to do so. The law recognizes to some extent, and should recognize much more than it does, the fact that the benefit of this natural pathway is not the property of any one man or set of men, but equitably belongs equally to every person who needs to use it directly or remotely.