Upon the question of publicity of the railroad business the commission held that, as the books of the defendant carriers, as to rates charged, facilities furnished and general movements of freight, are in the nature of semi-public records, the officers and agents of defendant carriers ought to give promptly to a complainant any statement of facts called for, if such statement may probably have importance on the hearing. Judge Brewer's opinion as to what constitutes a reasonable rate was evidently not shared by Judge Cooley and his colleagues, for in the case of the New Orleans Cotton Exchange vs. the Cincinnati, New Orleans and Pacific Railway Company the commission decided that the fact that a road earns but little more than operating expenses cannot be made to justify grossly excessive rates, and that "wherever there are more roads than the business at fair rates will remunerate, they must rely upon future earnings for the return of investments and profits." In another case the commission hold that "in fixing reasonable rates the requirements of operating expenses, bonded debt, fixed charges and dividend on capital stock from the total traffic are all to be considered, but the claim that any particular rate is to be measured by these as a fixed standard, below which the rate may not lawfully be reduced, is one rightly subject to some qualifications, one of which is that the obligations must be actual and in good faith." The rules governing the proper construction of classification sheets which the commission has laid down are founded upon common sense and justice. They say: "A classification sheet is put before the public for general information; it is supposed to be expressed in plain terms so that the ordinary business man can understand it and, in connection with the rate sheets, determine for himself what he can be lawfully charged for transportation. The persons who prepare the classification have no more authority to construe it than anybody else, and they must leave it to speak for itself." In defining what is legitimate traffic the commission made the following decision: "The transportation of traffic under circumstances and conditions that force a low rate for its carriage or an abandonment of the business, but which affords some revenue above the cost of its movement, and works no material injustice to other patrons of a carrier, is to be deemed legitimate competition. When, however, its carriage is at a loss and imposes a burden on like traffic at other points and on other traffic, it is to be deemed destructive and illegitimate competition."