Receivers and Shippers' Association, Cincinnati, Ohio. Nos. 773 and 774, in Supreme Court, Oct. term, 1911, James J. Hooker [and Ezra E. Williamson, president and secretary of Receivers and Shippers' Association] v. Martin A. Knapp et al.; Eagle White Lead Company et al. v. Interstate Commerce Commission et al., on appeal from Commerce Court; supplemental brief for United States on question of jurisdiction of Commerce Court.