“Railway freight rates and pooling” : hearings before the commiittee on interstate commerce, U.S. Senate, having under consideration the bills (S.3521) “to enlarge the jurisdiction and powes of the Interstae Commerce Commission” — and (S.3575) “to amend an act entitled ‘An act to regulate commerce’, approved Feb. 4, 1887, and all acts amendatory thereof”; v.1