“ It was further found that the carriers' absorption practices at the complaining markets were supported neither by revenue considerations nor sound transportation factors, and that the widespread absorption of switching charges on noncompetitive traffic at other important markets was strong evidence of the reasonableness of such practice and of the unreasonableness of the carriers' refusal to absorb such charges at the complaining markets. Upon the basis of these findings the Commission entered the order challenged on this appeal. ”

“ Chicago & North Western Railway Company, 245 I.C.C. 11, requiring the appellant railroads to cease and desist from maintaining certain absorption rules and practices found to be unduly discriminatory and unreasonable and therefore offensive to the Interstate Commerce Act, 49 U.S.C. §§ 1 (6) , 3 (1) , 15 (1) , 49 U.S.C.A. §§ 1 (6) , 3 (1) , 15 (1) . ”