No doubt the time will come when the railroads of the country will constitute, as they do not now, a system. There are those who think this may, sufficiently for practical purposes, be accomplished by the legalization of some scheme of pooling; but this is a crude device, against which there is an existing prejudice not easily to be removed. Others look for unity through gradual consolidations, the tendency to which is manifest, or through something in the nature of a trust, or by means of more comprehensive and stringent national control. Beyond all these is not infrequently suggested a Government ownership. Of the theories that might be advanced in this direction, or the arguments in their support, nothing further will be said here; the immediate purpose being accomplished when it is shown how misleading may be the term _system_, when applied to the railroads of the country as an aggregate, as now owned, managed, and controlled. * * * * * Every man in the land is interested daily and constantly in railroads and the transportation of persons and property over them. The price of whatever he eats, or wears, or uses, the cost and comfort of travel, the speed and convenience with which he shall receive his mail and the current intelligence of the day, and even the intimacy and extent of his social relations, are all largely affected thereby. The business employs great numbers of persons, and the wages paid them affect largely the wages paid in other lines of occupation. The management of the business in some of its departments is attended by serious dangers, and thousands annually lose their lives in the service. Other thousands annually are either killed or injured in being transported; the aggregate being somewhat startling, though unquestionably this method of travel is safer than any other. The ingenuity which has been expended in devices to make the transportation rapid, cheap, and safe may well be characterized as marvellous, and some feats in railroad engineering are the wonder of the world. With all these facts and many others to create a public interest in the general subject, the editor of _Scribner's Magazine_, some little time ago, applied to writers of well-known ability and competency to prepare papers for publication therein upon the various topics of principal interest in the life and use of railroads, beginning with the construction, and embracing the salient facts of management and service. He was successful in securing a series of papers of high value, the appearance of which has been welcomed from month to month, beginning with June, 1888, with constant and increasing interest. These papers have a permanent value; and, in obedience to a demand for their separate publication in convenient form for frequent reference, the publishers now reproduce them with expansions and additions. A reference to the several titles will convince anyone