Undoubtedly, however, by far the most effective means of keeping railroad tracks from becoming foot-paths, and thus at once putting an end to the largest item in the grand total of the expenditure of life incident to the operation of railroads, is that secured by the Pennsylvania railroad as an unintentional corollary to its method of ballasting. That superb organization, every detail of whose wonderful system is a fit subject for study to all interested in the operation of railroads, has a roadway peculiar to itself. A principal feature in this is a surface of broken stone ballast, covering not only the space between the rails, but also the interval between the tracks as well as the road-bed on the outside of each track for a distance of some three feet. It resembles nothing so much as a newly macadamized highway. That, too, is its permanent condition. To walk on the sharp and uneven edges of this broken stone is possible, with a sufficient expenditure of patience and shoe-leather; but certainly no human being would ever walk there from preference, or if any other path could be found. Not only is it in itself, as a system of ballasting, looked upon as better than any other, but it confounds the tramp. Its systematic adoption in crowded, suburban neighborhoods would, therefore, answer a double purpose. It would secure to the corporations permanent road-beds exclusively for their own use, and obviate the necessity of arrests or futile threats to enforce the penalties of the law against trespassers. It seems singular that this most obvious and effective way of putting a stop to what is both a nuisance and a danger has not yet been resorted to by men familiar with the use of spikes and broken glass on the tops of fences and walls.