Pierce Butler, Beaumont Railway Company v. United States…
“ It is impossible to make divisions that will yield the same rate of profit to each carrier or upon every commodity or shipment moved by it. The average cost of service was apparently given much weight. It is not suggested that the operating expenses of each carrier attributable to the traffic in question vary as does its rate of return on its business as a whole. Nor does it appear that the carriers having the highest rates of return from their total business or from that in the territory in which they belong, move the traffic in question at comparatively low costs. ”
