For villages and cities, and for lands devoted or adapted to special purposes, an accurate estimate of the cost of reproduction of the right of way can be determined only by a specific investigation of the conditions in each community. While it is difficult to conceive all the activities and sentiments which have growth in, from, and of railway operation, as being in existence without the railway, it is only through such an assumption that one can estimate correctly the make-up of the items of cost of reproducing a railway as such railway may now exist. To assume that the railway, not existent for the purpose of estimating the cost of reproduction, will now receive the donations of land and moneys that were made half a century ago, is merely going back to a determination of what the road has actually cost; and that is contrary to the intent of the theory of the cost of reproduction. The conception of a parallel line is not correct, for it imposes thereby a further burden on properties which have already contributed to the public good, probably to an extreme extent, and gives an abnormal cost for right of way, as shown when a railway seeks to enlarge its terminals in a crowded community, or to find a new entrance into a populous city.

So, too, in estimating on the formation of the roadway, one must consider the roadway to be reproduced as being obliterated—all cuts and borrow-pits refilled, and all embankments and spoil banks removed from the right of way—but all other lines of transportation, except the railway to be reproduced, must be considered as being in existence as they actually are at the date when the estimate of cost of reproduction is made, and that such other lines of transportation are available for bringing in machinery, tools, teams, materials, and supplies for the construction of the railway to be reproduced. It is only by such an assumption that the benefit of the improved means and methods of construction now prevalent can be obtained; but it is not permissible to estimate for the construction of a railway with different grades, alignment, roadbed, widths, or with different materials than that of the railway to be reproduced merely because such construction at this day might be actually cheaper or better than to construct it in exact duplication. For example, if the rock cuts on the roadway to be reproduced be only 18 ft. wide, with ¼:1 slopes, one must not figure on the greater economy of steam-shovel excavation, because the steam shovel cannot be worked in cuts of that width; nor can the spoil from such cuts be carried long distances to eliminate a possible solid-rock borrow originally made elsewhere, because long hauls are practicable in steam-shovel work, but wanting in excavations where the mule is the transportation force. So, too, it is not permissible to estimate on reinforced concrete bridges to take the place of more costly cut-stone arches, if cut-stone arches are the structures that have been actually built. The idea of cost of reproduction is not synonymous with the idea of the cost of building a railway capable of serving the same transportation purpose. If all our railways were to be built anew, in the light of our present knowledge, and with our present traffic offerings and financial resources, vast changes would be made in the character of construction. The physical fact of existing construction prevents a theoretical substitution of what is the best construction for any community, together with its costs for the construction which was actually made years ago.

In the event that an estimate of reproduction costs be made for a State as a whole, or for a great railway system as a whole, the conception of reproduction is modified so that the construction may take the form of progressive construction, the principal lines being built first and the less important lines afterward. This method will require the estimate for interest during the construction period to be greater.

The money cost of the seasoning and the adaptation of the roadway to such a condition as will permit heavy trains to be run at high speeds, is great, but the amount is not readily ascertained. An estimate of cost of reproduction, to be true, must consider this item; and probably the more usual method of ascertaining it is to assume it to be an amount in some proportion to the cost of the excavation. This proportion will vary with the character of the material through which and of which the cuts and fills are made, and with the methods of construction necessarily adopted. There are many railways on which this cost will exceed 25% of the total cost of excavation.

After the estimate has been made, including the item for seasoning and adaptation, there should be added a contingent fund to cover the omitted work, consisting of small borrow-pits and ditches, undetermined foundations, unexpected conditions encountered, unavoidable "force account" work, minor changes of streams and highways, damages to adjoining lands due to the methods of construction and to diversion of water, etc. This item will not exceed 5% of the cost of the roadway if the estimate be accurately made.

The more convenient form into which an estimate of cost of reproduction of a steam railway is to be put is to follow the sub-accounts, as prescribed by the Interstate Commerce Commission for Expenditure for Road. Each item given in that accounting has a place in the estimate. These comments are confined to the items covering the roadway, namely, Right of Way and Station Grounds, Grading, Tunneling, Bridges, Trestles, and Culverts.

Henry C. Adams, Esq.[[28]] (by letter).—To the writer this paper seems to be the most complete and comprehensive discussion of the general question of valuation of property invested in public service industries that has come under his notice. It is especially important in that it is a summary of the discussion on this most difficult subject during the past ten years, and the writer thoroughly agrees with the general conclusions reached by Mr. Riggs.

There is one point, however, which might possibly have been developed more completely, and that is the treatment of discounts, which presents itself from time to time in the general discussion. Mr. Riggs quotes with approval the following:

"If a company can market its 50-year, 4 per cent, bonds at 90 per cent. of par, it means that the company's credit is on a 4½ per cent. basis; that it could market a like security paying 4½ per cent. at par."

This is, of course, correct as far as the mathematics of the proposition is concerned, but it seems to overlook that peculiar psychology of the market which enables a corporation to secure a larger amount of actual cash for a given interest annuity when bonds are sold at a discount than when they are sold at par.