Railroads. Amending sec. 501 of transportation act, 1920, report to accompany H. R. 14674 [to amend sec. 501 of transportation act, 1920, so as to extend until Jan. 1, 1922, effective date of sec. 10 of act to supplement existing laws against unlawful restraints and monopolies, and for other purposes]; submitted by Mr. Esch.