An Index-digest of Decisions Under the Federal Safety Appliance Acts: Act of March 2, 1893, 27 Stat. L., 531, as Amended by Act of April 1, 1896, 29 Stat. L., 85, and Act of March 2, 1903, 32 Stat. L., 943; Together with Relevant Excerpts from Other Cases in which the Acts Have Been Construed