"The value of real estate and plant is to a considerable extent a matter of opinion, and the same may be said of personal estate when not based upon the actual cost of material and construction. Deterioration of the value of the plant, mains, and pipes is also to some extent based upon opinion. All these matters make questions of value somewhat uncertain." The Supreme Court permitted the tangible values found by the lower Court to stand. It concurred with the lower Court in that it was not a case for a valuation of good will. It concurred with the lower Court in holding that the company was entitled to the benefit of any increase in tangible values, and that such increases should appear in the appraisal. It did not agree with the Court in the increase of franchise value above that which was capitalized in 1884, with the consent of the State of New York, and reduced the franchise value figure to $7,781,000. On this basis, the estimated return, under the new rate on the valuation of $55,612,435, was 5½%, which rate, in view of all the circumstances, is held to be not confiscatory and to be a not unreasonable return on the investment. The franchise value, as commented on in these cases, is referred to at considerable length in the following pages. On January 4th, 1909, the case of Knoxville _vs._ Water Company (212 U. S., 1) was decided. This, in some respects, is of greater value to the engineer than any others cited, in its determination of methods. In this the appraisement of the tangible property was made in minute detail, the sum of $10,000 was added for "organization, promotion, etc.," and $60,000 for "going concern."